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High-purity titanium dust targets

机译:高纯钛粉尘靶

摘要

A high-purity titanium sputtering target having controlled crystal characteristics. Uniformity problem of film thickness distribution on a substrate can be solved by adopting requirements of that (a) the average crystal grain diameters at various portions of the sputtering surface of the target are 500 mu m or less, preferably 100 mu m or less, and their dispersions are within +/- 20%, and (b) the defined orientation content ratios A have dispersions within+/- 20% and (c) a Ti target crystal structure has a recrystallization structure. The problems in connection with particle generation and lowered film forming rate in collimation sputtering can be solved by adopting the requirements that (d) said orientation content ratios A have is 80% or less, preferably 50% or less, and (e) the defined orientation content ratios B are 20% or less, as necessary, in combination with the aforementioned (a) to (c) requirements.
机译:具有可控晶体特性的高纯度钛溅射靶。通过采用以下要求,可以解决基板上的膜厚分布的均匀性问题:(a)靶的溅射表面的各个部分的平均晶粒直径为500μm以下,优选为100μm以下,并且它们的分散度在+/- 20%以内,并且(b)限定的取向含量比A的分散度在+/- 20%以内,并且(c)Ti靶晶体结构具有重结晶结构。通过采用以下条件,可以解决与准直溅射中的颗粒产生和成膜速率降低有关的问题:(d)所述取向含量比A为80%以下,优选为50%以下,并且结合上述(a)至(c)的要求,取向含量比率B根据需要为20%以下。

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