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采用ＳＥＭ， ＸＲＤ， ＤＴＡ， ＸＰＳ 等手段， 测定了高纯ＷＳ２ 微粉的密度、组成与价态、结构、摩擦磨损性能等物理性质， 研究了高纯ＷＳ２ 微粉分别在空气、氢气和氮气中的热稳定性。实验结果表明： ＷＳ２的平均密度为（７ ．７２ ±０ ．０２） ×１０３ ｋｇ／ｍ３ ；Ｓ／ Ｗ 比值约为２ ．１ ，Ｓ 为－ ２ 价， Ｗ 为＋ ４ 价； ＷＳ２ 微粉晶体为２ Ｈ 结构； ＷＳ２ 在空气中的热稳定性随着制备温度的升高而变好，４５０ ℃下制备的 ＷＳ２ 起始氧化温度为２４６ ℃，１４００ ℃下制备的ＷＳ２ 起始氧化温度为５７０ ℃；１３００ ℃下制备的ＷＳ２ 在氢气中的还原反应起始温度为６６０ ℃；在密闭氮气中的最高热稳定温度为１ ５００ ℃。
The physical properties such as density, composition and valence, structure, friction and wear properties of high purity WS2 powders were measured by means of SEM, XRD, DTA and XPS. The effects of heat on the purity of WS2 fine powders in air, hydrogen and nitrogen stability. The experimental results show that the average density of WS2 is (7.72 ± 0.02) × 103 kg / m3 and the S / W ratio is about 2. 1, S is - 2 valence, W is + 4 valence; WS2 fine powder crystal is 2 H structure; the thermal stability of WS2 in air becomes better with the increase of preparation temperature, the initial oxidation of WS2 prepared at 450 ℃ The initial oxidation temperature of WS2 prepared at 1400 ℃ is 570 ℃, the initial reaction temperature of WS2 prepared at 1300 ℃ is 660 ℃ in hydrogen, the highest temperature of 1 500 in closed nitrogen ℃.