1.目的和要求1983年12月初,在湖南醴陵召开的国家标准审定会上,通过“金属材料热膨胀特性参数测量方法”此方法等效于美国国家及美国材料与检验学会标准(ANSI/ASTME228-71,1979年复审),其中第五节规定膨胀仪的校准要使用由化学纯铂制成的标准样品,方法是将铂标样放入膨胀仪中,通过加热或冷却,对与透明石英热膨胀相应的 1. Purpose and Requirements At the beginning of December 1983, at the National Standard Examination Meeting held in Liling, Hunan Province, this method was equivalent to the standards of American National Institute of Materials Testing and Testing (ANSI / ASTME228- 71, reviewed in 1979), section V of which states that dilatometer calibration requires the use of a standard sample of chemically pure platinum by placing a platinum standard in a dilatometer and thermally expanding it with transparent quartz by heating or cooling corresponding