会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 17. 发明授权
    • Method for growing absorption-free alkali metal halide single crystals
    • 生长无吸收的碱金属卤化物单晶的方法
    • US4055457A
    • 1977-10-25
    • US716051
    • 1976-08-20
    • Carl F. Swinehart
    • Carl F. Swinehart
    • C30B11/00C30B17/00B01J17/06B01J17/08C01D3/04C01D3/10
    • C30B17/00C30B11/00C30B29/12
    • Large ultra-pure, prism-quality essentially single crystal boules and ingots of alkali metal chlorides and alkali metal bromides are grown by the methods of Kyropoulos and Stockbarger. Optically single crystals of these alkali metal halides are clear optical bodies free of haze throughout. A typical Kyropoulos grown boule of KBr of this invention is also absorption-free, and has cleavage or crystallographic planes which deviate from parallel by 1.degree. to 3.degree. per inch. By `absorption-free` is meant freedom of absorption at 7.2 microns (.mu.) due to nitrate, at 9.5-11 .mu. due to silicate, and at between 8 and 9 .mu. due to sulfate, which are the most difficult to control but as the term implies the bodies are also free of infrared absorption for impurities such as CO.sub.3.sup.-2, PO.sub.4.sup.-3, OH.sup.-, BO.sub.2.sup.-, SH.sup.-, CNO.sup.-, HCO.sub.3.sup.-, etc., which are easily avoided by use of good commercially available growth stock.A particular process for growth for either of the foregoing methods in a silica or quartz crucible, comprises growing an ultrapure ingot of KBr from a relatively impure melt containing silicate, sulfate, nitrate and nitrite ions, and includes maintaining the sodium content of the melt during growth to less than about 20 ppm (parts per million) and the barium content less than 10 ppm, adding barium bromide to the melt if necessary, and, contacting the melt with a trace of free bromine in a covered, but not air-tight, pot.
    • 通过Kyropoulos和Stockbarger的方法生长大型超纯,棱柱质量的碱性金属氯化物和碱金属溴化物。 这些碱金属卤化物的光学单晶是透明的光学体。 本发明的KBr的典型的Kyropoulos生长的棒也是无吸收的,并且具有相对于每平方英寸1°至3°的切割或结晶平面。 “无吸收”是指由于硝酸盐在7.2微米(μm)下的吸收自由度,由于硅酸盐而在9.5-11微米处,并且由于硫酸盐而在8至9微米之间,这是最难控制的,但是作为 该术语意味着物体对于诸如CO 3 -2,PO 4 -3,OH-,BO 2 - ,SH-,CNO-,HCO 3 - 等杂质也没有红外吸收,这些容易通过使用商业上很好地避免 可用成长股。