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这是一项有关化学热处理的专利发明,可用做钢材硼钛共渗的饱和介质。过去报导的硼钛共渗的渗剂成份是Na_2B_4O_7TiO_2系列的熔融盐,用电解方法进行硼钛共渗。但是电解硼钛共渗法要求贵重的设备,需有直流电源,操作复杂,难以在化学热处理后直接进行热处理。还报导过一种硼钛共渗的固体渗剂成份,这种成份是用粉末钛和有活性添加剂的含硼物质配制的。这种渗剂成份的缺点是硼钛扩散层的生长速度相当低,且必须在有液封闸门的密封耐热钢容器中进行饱和。
This is a patented invention of chemical heat treatment, which can be used as a saturating medium for boron-titanium co-infiltration of steel. In the past, the infiltrant component of borotitriositride was a molten salt of the Na_2B_4O_7TiO_2 series. Borotitanium permeation was electrolyzed. However, electrolytic boron-titanium co-permeation method requires expensive equipment, requiring a DC power supply, complex operation, it is difficult to heat treatment directly after chemical heat treatment. A borosilicate solid penetrant composition has also been reported that is formulated with powdered titanium and a boron-containing material with an active additive. The disadvantage of this penetration agent composition is that the growth rate of the boron-titanium diffusion layer is quite low and must be saturated in a hermetically sealed heat-resistant steel vessel with a liquid seal gate.