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一般描述
钨腐蚀剂是一种基于氢氧化钾和铁氰化钾溶液的混合物,可通过将基底浸入蚀刻溶液中而有助于将钨和铝等材料进行去除。
应用
半导体和微电子技术中钨薄膜金属化的选择性蚀刻剂。蚀刻剂是缓冲式、温和碱性铁氰化物配方,提供高分辨率图案,具有最小切割和光刻胶兼容性。蚀刻剂可直接使用(不需要稀释)。可控、均匀蚀刻是通过浸渍或喷雾蚀刻技术实现的。蚀刻能力(速率在∼70%时下降)为64 g/加仑。建议工作温度:20-80 °C(30-40 °C最常用)
制备说明
- 20°C = 30 Å/秒
- 30°C = 140 Å/秒 20°C = 80 Å/秒
- 60°C = 250 Å/秒
警示用语:
Danger
危险声明
危险分类
Aquatic Chronic 3 - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A
补充剂危害
储存分类代码
8B - Non-combustible corrosive hazardous materials
WGK
WGK 2
闪点(°F)
Not applicable
闪点(°C)
Not applicable
个人防护装备
Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter
How do I increase the etch rate?
1.The rate will approximately double with every 10°C increase in temperature. 2. Increase the rate of stirring or agitation.
How do I reduce the etch rate?
Adding 1-part deionized water to 2 parts etchant will reduce the etch rate approximately 50%.
Do I need to dilute the etchant?
No, it is ready to use.
How do I reduce undercutting?
Increase the rate of stirring or agitation.
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