PROCESS FOR DEPOSITING LAYERS OF DIAMOND
    2.
    发明申请
    PROCESS FOR DEPOSITING LAYERS OF DIAMOND 审中-公开
    沉积金刚石层的工艺

    公开(公告)号:WO1988002792A1

    公开(公告)日:1988-04-21

    申请号:PCT/US1987002251

    申请日:1987-09-08

    CPC classification number: C23C16/278 C23C16/272 C30B25/02 C30B29/04

    Abstract: A process for depositing diamond (12) onto a substrate (14), which is of particular utility in fabricating very thin layers of diamond. Diamond (12) is deposited by chemical vapor deposition of a hydrocarbon vapor wherein the carbon atoms are saturated and the ratio of hydrogen atoms linked to carbon atoms is less than 2. That is, the carbon atoms of the hydrocarbon are bonded by single bonds at an angle near 109.5 degrees, the same angle required for the carbon atoms in the deposited diamond. The limited number of hydrogen atoms ensures a compact structure for the hydrocarbon, and reduces the system burden of removing excess hydrogen upon deposition. The polycyclic alkanes exhibit the required structures. Preferred hydrocarbons include adamantane (Fig. 2), congressane (Fig. 3), cubane (Fig. 4), and basketane (Fig. 5).

    Abstract translation: 用于将金刚石(12)沉积到基底(14)上的方法,其特别用于制造极薄的金刚石层。 金刚石(12)通过烃蒸汽的化学气相沉积沉积,其中碳原子是饱和的,并且与碳原子连接的氢原子的比例小于2.也就是说,烃的碳原子通过单键键合在 接近109.5度的角度,沉积金刚石中碳原子所需的角度相同。 有限数量的氢原子确保了碳氢化合物的紧凑结构,并降低了在沉积时除去过量氢气的系统负担。 多环烷烃显示出所需的结构。 优选的烃包括金刚烷(图2),异丙烷(图3),立方烷(图4)和圆珠体(图5)。

    METHOD OF FABRICATING OPTICAL FIBER PREFORMS HAVING REDUCED SUSCEPTIBILITY TO RADIATION DAMAGE
    3.
    发明申请
    METHOD OF FABRICATING OPTICAL FIBER PREFORMS HAVING REDUCED SUSCEPTIBILITY TO RADIATION DAMAGE 审中-公开
    制造具有降低的辐射损伤可靠性的光纤预制件的方法

    公开(公告)号:WO1986007347A1

    公开(公告)日:1986-12-18

    申请号:PCT/US1986000614

    申请日:1986-03-27

    CPC classification number: C03B37/018

    Abstract: A method for producing an optical fiber preform (10) having a core portion of reduced HO impurity content, wherein a doped silica core layer (12) is deposited onto the inner surface of a tube formed of fused silica in the presence of a reactive gas mixture of iodine and oxygen, the doped silica core layer (12) being formed by oxidizing chlorides of silicon and dopant elements to their respective oxides and then collapsing the tube (11) to form the preform (10).

    Abstract translation: 一种制造光纤预制棒(10)的方法,其具有减少的HO - 杂质含量的核心部分,其中掺杂的二氧化硅核心层(12)沉积在由熔融二氧化硅形成的管的内表面上, 氧和氧的反应性气体混合物,掺杂的二氧化硅核心层(12)通过将硅和掺杂剂元素的氯化物氧化成它们各自的氧化物,然后使管(11)塌缩以形成预成型体(10)而形成。

    CATALYST MATERIAL
    5.
    发明申请
    CATALYST MATERIAL 审中-公开
    催化材料

    公开(公告)号:WO1988010151A1

    公开(公告)日:1988-12-29

    申请号:PCT/US1988001453

    申请日:1988-05-06

    CPC classification number: H01S3/036 B01J23/622

    Abstract: A catalyst material having a catalyst metal selected from the group consisting of platinum, iridium, rhodium and palladium, supported on a substrate, selected from the group consisting of aluminum oxide and tin oxide, wherein the substrate has at least two types of surface atomic sites at which the catalyst metal can reside, and the catalyst metal resides primarily in one of those types of sites. In one catalyst material having platinum supported on an aluminum oxide substrate, the platinum atoms are located predominantly in the substrate sites having the lowest activation energy for catalysis of a chemical reaction. Population of only the low energy type of site is achieved by limiting the platinum content to from about 0.25 to about 1.0 atomic percent.

    PROCESS FOR THE PREPARATION OF ULTRAPURE HEAVY METAL FLUORIDES
    6.
    发明申请
    PROCESS FOR THE PREPARATION OF ULTRAPURE HEAVY METAL FLUORIDES 审中-公开
    超声重金属氟化物的制备方法

    公开(公告)号:WO1986004049A1

    公开(公告)日:1986-07-17

    申请号:PCT/US1985001835

    申请日:1985-09-26

    CPC classification number: C01G21/16 C01B9/08 C01G5/02 C01G13/04 C01G15/00

    Abstract: Method for the preparation of ultrapure active metal fluorides of increased purity from their metal oxides by reacting an active metal with a predetermined amount of HF(aq) to form a solid reaction product which is dried under controlled heating to form a hydrated fluoride. This hydrated active metal fluoride is then subjected to reactive atmosphere processing comprising hydrofluoric acid vapor in a CO2 reactive carrier gas and a selected halide compound in the gas phase for a predetermined period of time to further increase anion purity.

    Abstract translation: 通过使活性金属与预定量的HF(aq)反应制备从其金属氧化物提纯的超纯活性金属氟化物的方法,以形成在受控加热下干燥以形成水合氟化物的固体反应产物。 然后将这种水合的活性金属氟化物在气相中在CO 2反应性载气和选择的卤化物化合物中进行包含氢氟酸蒸气的反应性气氛处理预定的时间以进一步增加阴离子纯度。

    PROCESS FOR THE PREPARATION OF ULTRAPURE ACTIVE METAL FLUORIDES
    7.
    发明申请
    PROCESS FOR THE PREPARATION OF ULTRAPURE ACTIVE METAL FLUORIDES 审中-公开
    制备超弹性活性金属氟化物的方法

    公开(公告)号:WO1986004048A1

    公开(公告)日:1986-07-17

    申请号:PCT/US1985001834

    申请日:1985-09-26

    Abstract: Method for the preparation of ultrapure active metal fluorides of increased purity from their metal oxides by reacting an active metal with a predetermined amount of HF(aq) to form a solid reaction product which is dried under controlled heating to form a hydrated fluoride. This hydrated active metal fluoride is then subjected to reactive atmosphere processing comprising hydrofluoric acid vapor in a CO2 reactive carrier gas and a selected fluoride compound in the gas phase for a predetermined period of time to further increase anion purity.

    Abstract translation: 通过使活性金属与预定量的HF(aq)反应制备从其金属氧化物提纯的超纯活性金属氟化物的方法,以形成在受控加热下干燥以形成水合氟化物的固体反应产物。 然后使该水合活性金属氟化物在CO 2反应性载气和选择的氟化合物中在气相中进行包含氢氟酸蒸气预定时间的反应性气氛处理,以进一步提高阴离子纯度。

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