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china english 'and its method of manufacture.
china english 'and its method of manufacture.
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机译：《中国英语》及其制作方法。
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869,315. Ceramic glass. CORNING GLASS WORKS. Oct. 1, 1959 [Oct. 9, 1958], No. 33325/59. Class 56. A semi-crystalline ceramic is made from a composition of which at least 95% consists of 30-48% SiO 2 , 34-54% Ca 2 P 2 O 7 and 15-21% Al 2 O 3 , the weight ratio of Ca 2 P 2 O 7 to Al 2 O 3 being not less than 1À85. This composition is melted to form a homogeneous glass which is shaped to form an article which is then reheated to about 1050‹C., at a rate not exceeding 5‹C. per minute between 850‹C. and 1050‹C., until, as a result of conversion to semi-crystalline form its linear thermal coefficient between 0‹ and 300‹C. exceeds 90 x 10SP-7/SP per ‹C. Preferably the article is held for two hours at 950‹C. and ¢ hour at 1000‹C. the components may be derived from batch materials such as bone ash, feldspar or clay or from purified materials such as sand, lime, phosphoric salts, and alumina. A fining agent is not necessary but 0À1 to 1À0% of ASzOs may be added. Oxidising agents such as AS 2 O 5 , Ca(NO 3 ) 2 or Al 2 (NO 3 ) 3 may be added to neutralise reducing conditions which might reduce the phosphate. Constituents other than those already quoted should not exceed 5%. Thus there may be up to 5% of CaF 2 , MgO, ZnO, PbO, 2% of K 2 O, NazO, or LizO, 3% ZrOz.
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机译：869,315。陶瓷玻璃。康宁玻璃制品。 1959年10月1日[十月[1958年9月9日]，编号33325/59。等级56。半结晶陶瓷由以下成分组成：其重量至少95％由30-48％SiO 2，34-54％Ca 2 P 2 O 7和15-21％Al 2 O 3组成， Ca 2 P 2 O 7与Al 2 O 3的比为1〜85以上。将该组合物熔融以形成均质玻璃，该均质玻璃成形以形成制品，然后以不超过5℃的速率将其再加热至约1050℃。在850 ‹C之间每分钟。直至1050℃，直至转化为半结晶形式为止，其线性热系数在0℃至300℃之间。每个‹C超过90 x 10 -7 。优选地，该制品在950℃下保持两个小时。在1000 ‹C时为¢小时。这些成分可以源自批料，例如骨灰，长石或粘土，也可以源自纯化的材料，例如沙，石灰，磷酸盐和氧化铝。不需要澄清剂，但可以添加0％至1％至0％的ASzO。可以添加氧化剂例如AS 2 O 5，Ca（NO 3）2或Al 2（NO 3）3以中和可能还原磷酸盐的还原条件。除已引用的成分外，其他成分不得超过5％。因此，可能存在多达5％的CaF 2，MgO，ZnO，PbO，2％的K 2 O，NazO或LizO，3％的ZrOz。
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