Method for producing ultra-high purity, optical quality, glass articles
    69.
    发明公开
    Method for producing ultra-high purity, optical quality, glass articles 审中-公开
    一种用于生产玻璃体超高纯度和光学质量的过程

    公开(公告)号:EP1700828A1

    公开(公告)日:2006-09-13

    申请号:EP05005091.3

    申请日:2005-03-09

    申请人: Degussa AG

    IPC分类号: C03B19/06 C03B32/00 C01B33/18

    摘要: A method for producing ultra-high purity, optical quality, glass articles is disclosed which involves:

    1. compacting metaloxide or metalloidoxide to granules having a mean particle size of less than about 1 millimeter;
    2. optionally fully sintering the granules to produce high purity, artificial sand;
    3. casting the granules or artificial sand by conventional techniques, such as, slip casting, to form a high density, porous, green body;
    4. optionally drying and partially sintering the green body;
    5. optionally fully sintering the green body under vacuum; and
    6. optionally hot isostatic pressing the fully sintered green body

    whereby the metal oxide or metalloid oxides is a pyrogenic silicon dioxide powder with a BET surface area of 30 to 90 m 2 /g, a DBP index of 80 or less, a mean aggregate area of less than 25000 nm 2 and a mean aggregate circumference of less than 1000 nm, wherein at least 70% of the aggregates have a circumference of less than 1300 nm or a high-purity pyrogenically prepared silicon dioxide having metal contents of less than 0.2 µg/g.

    摘要翻译: 一种生产超高纯度,光学质量,玻璃制品的方法是游离缺失盘涉及:1.压实金属氧化物或准金属具有小于约1毫米的平均颗粒尺寸的颗粒; 2.任选地完全烧结所述颗粒,以产生高纯度的,人工砂; 3.铸造通过常规技术,颜色的颗粒或人工砂:如,粉浆浇铸,以形成高密度,多孔的,生坯; 4.任选地干燥和烧结该生部分主体; 5.任选地完全烧结在真空下生坯; 和6.或者热等静压完全烧结的生坯由此金属氧化物或准金属氧化物是具有30的BET表面积的热解二氧化硅粉末至90米2 /克,80或更小的DBP指数,平均聚集体 小于25000个纳米2和小于1000nm的平均聚集体周长面积,worin聚集体的至少70%具有小于1300nm的或高纯度的热解制备的具有小于0.2的金属含量二氧化硅的圆周 微克/克。

    QUARTZ GLASS EXCELLING IN PLASMA CORROSION RESISTANCE AND PROCESS FOR PRODUCING THE SAME
    70.
    发明公开
    QUARTZ GLASS EXCELLING IN PLASMA CORROSION RESISTANCE AND PROCESS FOR PRODUCING THE SAME 审中-公开
    QUARZKRISTALL MIT HERVORRAGENDERPLASMAKORROSIONSBESTÄNDIGKEITUND HERSTELLUNGSVERFAHRENDAFÜR

    公开(公告)号:EP1681276A1

    公开(公告)日:2006-07-19

    申请号:EP05748813.2

    申请日:2005-06-09

    摘要: As a jig material to use under plasma reaction for producing semiconductors, the present invention provides a quartz glass having resistance against plasma corrosion, particularly corrosion resistance against fluorine-based plasma gases, and which is usable without causing anomalies to silicon wafers; the present invention furthermore provides a quartz glass jig, and a method for producing the same. A quartz glass containing 0.1 to 20 wt% in total of two or more types of metallic elements, said metallic elements comprising at least one type of metallic element selected from Group 3B of the periodic table as a first metallic element and at least one type of metallic element selected from the group consisting of Mg, Ca, Sr, Ba, Sc, Y, Ti, Zr, Hf, lanthanoids, and actinoids as a second metallic element, provided that the maximum concentration of each of the second metallic elements is 1.0 wt% or less.

    摘要翻译: 作为制造半导体的等离子体反应中使用的夹具材料,本发明提供一种具有耐等离子体腐蚀性,特别是耐氟基等离子体气体的耐腐蚀性的石英玻璃,可以在不产生硅晶片异常的情况下使用; 本发明还提供一种石英玻璃夹具及其制造方法。 含有0.1〜20重量%的两种以上金属元素的石英玻璃,所述金属元素包含选自元素周期表第3B族的至少一种金属元素作为第一金属元素和至少一种 金属元素选自Mg,Ca,Sr,Ba,Sc,Y,Ti,Zr,Hf,镧系元素和锕系元素作为第二金属元素,条件是每个第二金属元素的最大浓度为1.0 wt%以下。