Dandong Tongda High Temperature Accessory is a precision instrument specifically designed for material research in high-temperature environments. It enables real-time observation and analysis of samples under high-temperature conditions, helping researchers obtain dynamic change information of materials at elevated temperatures. The Dandong Tongda High Temperature Accessory demonstrates outstanding technical performance, capable of meeting the demands of most high-temperature experimental environments. Depending on the experimental environment, the temperature range of the accessory varies: in an inert gas atmosphere, the temperature can range from room temperature to 1200°C; in a vacuum environment, the maximum temperature can reach 1600°C. Such a wide temperature range allows the accessory to adapt to various complex research scenarios, providing comprehensive technical support for studying material behavior at high temperatures. In terms of temperature control, the accessory also performs exceptionally well, with a control accuracy of up to ±0.5°C. This ensures high stability during experiments, offering a solid guarantee for the accuracy and reproducibility of experimental data. The High Temperature Accessory's design and construction reflect a balance between professionalism and practicality. The accessory uses polyester film as the window material, a choice that ensures both good observation clarity and stability in high-temperature environments. The cooling system employs deionized water circulation cooling, effectively ensuring the stable operation of the equipment under prolonged high-temperature conditions and extending its service life. This design considers the requirements of long-duration high-temperature experiments, allowing researchers to conduct continuous observations without worrying about equipment overheating. Whether studying crystal structure phase transitions, material thermal expansion behavior, or observing chemical reactions of materials at high temperatures, this accessory can provide intuitive and accurate experimental data.

Since its establishment in 2010, Dandong Tongda Science & Technology Co., Ltd. has been focusing on the research, development, and production of X-ray analytical instruments and non-destructive testing equipment.The company has accumulated extensive experience in X-ray technology. In 2013, it became the undertaking unit of the "National Major Scientific Instrument and Equipment Development Project" for the X-ray single crystal diffractometer, supported by the Ministry of Science and Technology of China. The Cryostream low-temperature liquid nitrogen cooling system, launched by Dandong Tongda Science & Technology, is a representative product of its Medium-low temperature accessory.This system is specifically designed for scientific experiments requiring precise low-temperature environments and integrates multiple advanced technologies. Precise temperature control is the core advantage of the system. The Medium-low temperature accessory can maintain a temperature stability of up to 0.3 K within the standard temperature range of 100–300 K.Such high temperature stability provides a reliable environment for scientific experiments, ensuring the accuracy and reproducibility of experimental data. Efficient cooling performance is another highlight. The system requires only 35 minutes to cool from room temperature to 100 K.The rapid cooling speed significantly enhances the work efficiency of researchers, making it particularly suitable for experimental scenarios requiring frequent temperature changes. ​ The intelligent control system makes operation more straightforward. Utilizing a fuzzy PID temperature control algorithm, the system achieves accurate and stable real-time control of low-temperature nitrogen gas temperature.This intelligent control approach greatly reduces the operational complexity, allowing researchers to focus more on the experiments themselves rather than equipment adjustments.

In situ medium and low temperature accessories are experimental equipment accessory used for material analysis, mainly used for in-situ testing in low or medium low temperature environments. Combined with vacuum environment, temperature control, and special window material design, it is widely used in fields such as chemistry, materials science, and catalytic research. 1. Core functions and technical parameters of in-situ medium and low temperature accessories (1) Temperature range and control accuracy Supports a temperature range of -196 ℃ to 500 ℃ in a vacuum environment (such as liquid nitrogen refrigeration), with a temperature control accuracy of ± 0.5 ℃. Some models can cover temperatures from -150 ° C to 600 ° C, suitable for a wider range of experimental needs. (2) Refrigeration method and cooling system Using liquid nitrogen refrigeration, with a liquid nitrogen consumption of less than 4L/h, and maintaining a stable temperature through a deionized water circulation cooling system. Optional low-temperature liquid nitrogen cooling system (such as Cryostream series). (3) Window Materials and Structural Design The window material is mostly polyester film (such as TD series), and some infrared configurations use KBr or SiO2 windows. The structure includes a high-pressure resistant design (such as 133kPa) and is equipped with multiple gas inlets/outlets, suitable for in-situ reactions or atmosphere control. 2. Application fields of in-situ medium and low temperature accessories (1) Material research Used for in-situ testing of X-ray diffractometers (such as TD-3500) to study changes in crystal structure and phase transition processes at low temperatures. Support research on heterogeneous catalysis, gas-solid interactions, photochemical reactions, etc. (2) Electrochemical and Battery Research It can be extended to in-situ battery accessories to test composites in electrochemical systems (such as carbon, oxygen, nitrogen, sulfur, etc.), with a temperature resistance of up to 400 ℃. (3) Industry Applications The products of Dandong Tongda Technology (TD series) have been applied in the fields of chemistry, chemical engineering, geology, metallurgy, etc., and exported to countries such as the United States and Azerbaijan. 3. Typical products and brands of in-situ medium and low temperature accessories​ Dandong Tongda Technology (TD Series) The accessories for X-ray diffractometers such as TD-3500 and TD-3700 emphasize high-precision temperature control (± 0.5 ℃) and efficient liquid nitrogen refrigeration. Suitable for diffuse reflectance spectroscopy measurement, providing stainless steel reaction chamber, multi window configuration (FTIR or UV Vis compatible), supporting high vacuum to 133kPa environment. Overall, in situ medium and low temperature accessories have become an important tool for material in situ analysis through precise temperature control, vacuum environment, and window design adapted to different instruments. They play an irreplaceable role in the study of low-temperature crystal structures and exploration of catalytic reaction mechanisms.

To understand the changes in crystal structure of samples during high-temperature heating and the changes in mutual dissolution of various substances during high-temperature heating. In situ high-temperature attachment is an experimental device used for in-situ characterization of materials under high temperature conditions, mainly used to study dynamic processes such as crystal structure changes, phase transitions, and chemical reactions of materials during high-temperature heating. The following provides a detailed introduction from the aspects of technical parameters, application scenarios, and precautions: 一、 Technical parameters of in-situ high-temperature attachments 1. Temperature range of in-situ high-temperature attachments Inert gas/vacuum environment: The maximum temperature can reach 1600 ℃. Standard environment: Room temperature to 1200 ℃ (as provided in the TD-3500 XRD accessory). 2. Temperature control accuracy of in-situ high-temperature accessories: usually ± 0.5 ℃ (such as in-situ high-temperature accessories), and the accuracy of some equipment above 1000 ℃ is ± 0.5 ℃. 3. Window materials and cooling methods for in-situ high-temperature attachments Window material: Polyester film (temperature resistant to 400 ℃) or beryllium sheet (thickness 0.1mm), used for X-ray penetration. Cooling method: Deionized water circulation cooling ensures stable operation of the equipment under high temperature conditions. 4. Atmosphere and pressure control of in-situ high-temperature attachments: Supports inert gases (such as Ar, N ₂), vacuum or atmospheric environments, and some models can withstand pressures less than 10 bar. The atmosphere gas flow rate can be adjusted (0.7-2.5L/min), suitable for corrosive gas environments. 二、 Application scenarios of in-situ high-temperature attachments 1. Material research on in-situ high-temperature attachments Analyze the changes in crystal structure (such as platinum phase transition) and phase transition processes (such as melting and sublimation) at high temperatures. Study the chemical reactions of materials at high temperatures, such as dissolution and oxidation. 2. Equipment adaptability of in-situ high-temperature attachments Mainly used in X-ray diffractometers (XRD), such as TD-3500, TD-3700, etc. It can also be used for in-situ tensile testing using scanning electron microscopy (SEM), with customized flange connections required. 三、 Precautions for using in-situ high-temperature accessories 1. Sample requirements for in-situ high-temperature attachments It is necessary to test the chemical stability of the sample in the target temperature range in advance to avoid decomposition into strong acids/bases or ceramic bonding. The sample shape must meet the requirements of the attachment (such as thickness 0.5-4.5mm, diameter 20mm). 2. Experimental operating procedures for in-situ high-temperature attachments The heating rate needs to be controlled (e.g. maximum 200 ℃)/ min@100 ℃) to avoid overheating and damaging the equipment. After the experiment, the sample needs to be cooled to room temperature to prevent structural damage.

The high temperature accessory​ in a diffractometer is an additional device that can perform X-ray diffraction analysis on samples under high temperature conditions. To understand the changes in crystal structure of samples during high-temperature heating and the changes in mutual dissolution of various substances during high-temperature heating. Working principle of high temperature accessory: By using methods such as resistance heating, induction heating, or radiation heating, the sample is heated within a set temperature range. At the same time, it is equipped with high-precision temperature sensors and control systems to monitor and adjust the temperature of the sample in real time, ensuring the stability and accuracy of the temperature. The temperature control accuracy can reach ±0.5℃ or even higher. In order to maintain the stability of the sample at high temperatures and prevent it from reacting with oxygen in the air, high temperature accessory usually require an atmosphere protection system. Common atmospheres include inert gases such as argon, nitrogen, etc. The atmosphere control system can accurately control the flow rate and pressure of the atmosphere, providing a stable experimental environment for the sample. The main functions of high temperature accessory is: Real time monitoring of sample phase transition, chemical reactions, crystal structure changes, and other processes can be carried out in high-temperature environments to obtain information on the structure and properties of substances at different temperatures. By analyzing the position, intensity, and shape of diffraction peaks, the crystal cell parameters, crystal structure, phase composition, and other information of the sample can be obtained, and the content of each component can be accurately measured. Study the rate, mechanism, and diffusion behavior of chemical reactions. For example, observing the structural changes of catalysts during high-temperature reactions, understanding the formation and disappearance of their active centers, and optimizing the performance of catalysts. Application area of high temperature accessory: Used to study the phase transition, crystal structure evolution, and performance changes of high-temperature superconducting materials, metal alloys, ceramic materials, etc. at different temperatures, providing a basis for material design and preparation. Monitoring the changes in substances during chemical reactions, such as studying the structural changes of catalysts and the evolution of active centers in high-temperature catalytic reactions, can help develop efficient catalysts. Study the physical properties of substances at high temperatures, such as magnetism, electronic structure, and their relationship with temperature, and explore new physical phenomena and laws. Technical parameter of high temperature accessory: Temperature setting: Inert gas environment from room temperature to 1200 ℃ Vacuum environment: high temperature of 1600 ℃ Temperature control accuracy: ± 0.5 ℃ Window material: Polyester film Cooling method: deionized water circulation cooling In summary, the high temperature accessory in the diffractometer is an important testing tool that can perform X-ray diffraction analysis on samples under high temperature conditions, providing strong support for research in fields such as materials science, chemical engineering, and physics.

The medium and low temperature accessory of an X-ray diffractometer is a key component used for X-ray diffraction analysis in low-temperature environments.The medium and low temperature accessory is widely used in research and development work in materials science, physics, chemistry, and other fields, especially suitable for scenarios that require structural analysis of materials under different temperature conditions. In order to understand the changes in crystal structure during low-temperature refrigeration process, the following are the technical parameters of the medium and low temperature accessory: Vacuum environment:- 196~500℃ Temperature control accuracy: ± 0.5 ℃ Refrigeration method: liquid nitrogen (consumption less than 4L/h) Window material: Polyester film Cooling method: deionized water circulation cooling In short, the medium and low temperature accessory of X-ray diffractometer is important equipment component that can provide strong support for scientific research and material analysis.The medium and low temperature accessory of a diffractometer is one of the important tools in the field of material structure analysis, with broad application prospects and significant research value.The medium and low temperature accessory​ of the diffractometer is a key component to ensure the normal operation and accurate measurement of the instrument under low-temperature conditions. Its design and performance directly affect the accuracy and reliability of experimental results. When selecting and applying medium and low temperature accessory, experimental requirements, sample characteristics, as well as the technical parameters and performance characteristics of the accessories should be fully considered to ensure the best experimental results.

The medium and low temperature accessory is designed to understand the changes in crystal structure during the low-temperature refrigeration process.

High temperature accessory are designed to understand the changes in the crystal structure of samples during high-temperature heating, as well as the changes in mutual dissolution of various substances during high-temperature heating.

Dandong Tongda's In-situ High-temperature Accessory enables real-time analysis of material structural changes up to 1600°C with ±1°C precision. Ideal for superconductors, ceramics, and thin film research, it's exported globally.

Medium and low temperature accessory is an experimental device used for testing and analyzing materials or samples within a specific temperature range (usually a medium low temperature environment). The application areas include materials science, chemical engineering, and drug research and development. With the continuous advancement of technology and the increasing demand for applications, it will play a more important role in the future.

High temperature accessory is experimental equipment used for sample analysis in high temperature environment, in order to understand the changes in crystal structure of samples during high temperature heating and the changes in mutual dissolution of various substances during high temperature heating. According to different experimental requirements, different configurations of high temperature attachment can be selected, such as different window materials and reaction chamber designs, to adapt to specific experimental conditions. High temperature attachment is indispensable temperature accessory in laboratory research, which not only improve the efficiency and accuracy of experiments, but also expand the boundaries of scientific research.

The in-situ medium and low temperature accessory​ is designed to understand the changes in crystal structure during the low-temperature refrigeration process; In order to provide a medium and low temperature (usually below room temperature but not extremely low temperature, such as a range between -100 ℃ and room temperature) sample environment for microscopes and other instruments. Vacuum environment: -196~500℃ Temperature control accuracy: ±0.5℃ Refrigeration method: liquid nitrogen (consumption less than 4L/h) Window material: Polyester film Cooling method: deionized water circulation cooling