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有色金属的渗硼,一种是用在硬质合金与粉末冶金零件上;另一种是为了改善难熔金属如钽、钛、钨、锆等的耐磨、抗腐蚀性能。西德在这方面进行了多年的研究,攻克了渗层与基体的结合力的难关。 (1) 钛及钛合金的渗硼钛及钛合金的渗硼是在高真空(10~(-5)乇)或高纯度氩气保护下进行的。工艺温度100℃渗硼层分两层:表层为TiB_2相,厚度约0.015—0.020毫米,内层为TiB相,渗层与基体结合紧密。钛的渗硼层硬度为2500Hv_(0.1)
Boronizing non-ferrous metals, one is used in carbide and powder metallurgy parts; the other is to improve refractory metals such as tantalum, titanium, tungsten, zirconium and other wear resistance, corrosion resistance. West Germany in this area for many years of research, to overcome the barrier and the substrate matrix combination of difficulties. (1) Titanium and Titanium Alloys Boronizing Titanium and Titanium Alloys Boronizing is carried out under high vacuum (10⁻⁵Torr) or high purity argon. The process temperature of 100 ℃ boronizing layer is divided into two layers: the surface is TiB_2 phase, the thickness of about 0.015-0.020 mm, the inner layer is TiB phase, the infiltration layer and the substrate combined closely. Titanium boronizing layer hardness of 2500Hv_ (0.1)