金刚石材料结构转变温度数据集

为研发出适用于万米特深井极端苛刻环境的高性能聚晶金刚石复合片（PDC），显著提升复合片的综合性能指标（包括耐磨性、抗冲击韧性及高温热稳定性），本研究通过系统的材料表征与性能测试手段，对不同配方和烧结工艺制备的PDC样品进行了全面的热学性能分析。通过差热-热重联用分析（DTA-TG）、热膨胀系数（CTE）测试等表征方法，获取了材料在高温环境下的关键性能参数。
本数据集包含以下核心研究内容：首先，通过DTA-TG测试获得了PDC样品从室温至1400℃范围内的相变温度点、氧化起始温度及质量变化曲线，揭示了金刚石相的热稳定界限和粘结相氧化行为；其次，采用高温膨胀仪测定了不同温度梯度（25-1200℃）下复合片的轴向/径向热膨胀系数，建立了热膨胀行为与材料组分、界面结合的关联规律。
本数据集为多项关键研究提供了重要支撑：DTA-TG数据可定量分析PDC的起始石墨化温度（Tonset）和氧化失重率，为优化烧结工艺和粘结相组成以提高热稳定性提供依据；热膨胀系数数据则通过构建材料组分-CTE匹配模型，指导解决PDC与硬质合金基体间的热应力匹配问题。这些数据不仅揭示了温度场-应力场耦合作用下PDC的失效机理，更为建立"微观结构-热力学性能-服役行为"的多尺度关联模型奠定了实验基础。
本数据集包含8组热分析测试数据，通过对这些数据的深度挖掘，可加速开发出耐高温、抗热性能优异的PDC材料，提升钻头在特深井高温高压地层中的钻进效率和使用寿命，对突破万米级油气资源勘探技术瓶颈具有重大战略意义。

To develop high-performance polycrystalline diamond compacts (PDC) tailored for the extreme harsh environments encountered in 10,000-meter ultra-deep wells, and to significantly enhance the comprehensive performance metrics of PDC including abrasion resistance, impact toughness and high-temperature thermal stability, this study carried out comprehensive thermal performance analysis on PDC samples fabricated with various formulations and sintering processes via systematic material characterization and performance testing. Key performance parameters of the materials under high-temperature conditions were acquired through characterization techniques such as differential thermal analysis-thermogravimetry (DTA-TG) and coefficient of thermal expansion (CTE) tests.
This dataset covers the following core research contents: First, DTA-TG tests were conducted to obtain the phase transition temperature points, oxidation onset temperature and mass change curves of PDC samples over the temperature range from room temperature to 1400℃, revealing the thermal stability limit of the diamond phase and the oxidation behavior of the binder phase; Second, a high-temperature dilatometer was employed to measure the axial and radial coefficients of thermal expansion of the compacts under different temperature gradients (25–1200℃), establishing the correlation between thermal expansion behavior, material composition and interfacial bonding.
This dataset provides critical support for multiple key research endeavors: The DTA-TG data can be used to quantitatively analyze the onset graphitization temperature (Tonset) and oxidation weight loss rate of PDC, offering a basis for optimizing sintering processes and binder phase compositions to improve thermal stability; The CTE data can guide the resolution of thermal stress matching issues between PDC and cemented carbide substrates by constructing a material composition-CTE matching model. These data not only uncover the failure mechanism of PDC under the coupling effect of temperature and stress fields, but also lay an experimental foundation for establishing a multi-scale correlation model of "microstructure-thermodynamic properties-service behavior".
This dataset contains 8 sets of thermal analysis test data. Through in-depth mining of these data, the development of PDC materials with excellent high-temperature resistance and thermal stability can be accelerated, thereby improving the drilling efficiency and service life of drill bits in high-temperature and high-pressure formations of ultra-deep wells. This holds great strategic significance for breaking through the technical bottlenecks of 10,000-meter-level oil and gas resource exploration.

搜集汇总

背景与挑战

背景概述

该数据集聚焦于金刚石材料结构转变温度，包含通过差热-热重联用分析和热膨胀系数测试获得的8组热分析数据，用于研究聚晶金刚石复合片在高温下的相变、氧化行为和热膨胀特性。数据集旨在优化材料烧结工艺和热应力匹配，提升复合片在特深井极端环境中的耐磨性、抗冲击性及热稳定性，对突破万米级油气资源勘探技术瓶颈具有战略意义。