INTERFEROMETER MEASUREMENTS OF THE THERMAL DILATATION OF GLAZED WARE1
INTERFEROMETER MEASUREMENTS OF THE THERMAL DILATATION OF GLAZED WARE1
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釉面制品热膨胀的干涉仪测量1
DOI：
10.1111/j.1151-2916.1926.tb17176.x
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发表时间：
1926
期刊：
影响因子：
--
通讯作者：
C. G. Peters
中科院分区：
文献类型：
--
作者：
G. Merritt;C. G. Peters
釉面产品表面经常出现网状的细裂纹，不仅损坏了表面，而且缩短了产品的使用寿命，降低了产品的价格。由于釉和瓷体的相对膨胀率是控制这种情况的一个非常重要的因素，因此对两者的可靠测量至关重要。直到最近，困难之处在于，釉料的膨胀率是在熔化成玻璃、拉制成棒或浇铸在足够长度的模具上的样品上测量的。由于这种处理方法与材料铺在器皿上的处理方法不同，人们意识到这些方法可能会导致不可避免的错误。
The network of fine cracks often seen in the surface of glazed products not only mars the surface but shortens the life and lowers the price of the ware. Since the relative expansivity of the glaze and body is a very important factor in controlling this condition reliable measurements of both are of the utmost importance. Until recently the difficulty has been that the expansivity of the glaze has been measured on specimens of the material melted to glass and drawn into rods or cast in molds of sufficient length. Owing to the difference between this treatment and that received by the material when spread on the ware, it was realized that these methods might lead to unavoidable errors.
By the interference method, specimens 0.2 mm. in length can be measured with sufficient accuracy. Therefore in measuring glazes the samples may be taken directly from the finished ware. In this paper the thermal expansion of glaze materials prepared in the form of drawn glass or cast rods is compared with that of the same material taken from the finished ware. From the measurements, the expected divergence is found to be as much as 20% in the case of drawn glass specimens, and 10% for cast specimens.