金相检验、失效分析中,常需试样的无氧化加热退火、正火。现介绍一种简易的方法:无氧化加热采用小型坩埚电炉,根据试样大小可选非金属材料分析用报废了的小瓷坩埚。把事先经脱水的工业硼砂分批加入坩埚,作为加热介质。待全部熔化后,加入0.1克左右的工业纯铝,并充分搅拌硼砂溶液。十分钟后,把用四氯化碳清洗干净的试样迅速放入坩埚并立即压入硼砂液内,同时略加搅动后恒温。因坩 Metallographic testing, failure analysis, often without sample annealing heat, normalizing. Now introduce a simple method: non-oxidizing heating using a small crucible electric furnace, according to the sample size optional non-metallic materials scrapped small ceramic crucible. The previously dehydrated industrial borax added in batches as a heating medium. After all is melted, add about 0.1 g of industrial pure aluminum and stir the borax solution sufficiently. Ten minutes later, the sample cleaned with carbon tetrachloride was quickly put into the crucible and immediately pressed into the borax solution, with a slight agitation and constant temperature. Because of the crucible