摘要:
A dry-etching method for working SiO.sub.2, phospho-silicate glass, Si, Mo, W, Cr, TiW, Si.sub.3 N.sub.4 or the like by the use of a glow discharge plasma involves the steps of introducing He, Ar, N.sub.2, O.sub.2 or a mixed gas thereof into a reaction chamber from the outside; and effecting the plasma discharge in the reaction chamber so that a reactive gas is liberated from a high molecular resin material arranged in the reaction chamber and containing fluorine atoms. The dry-etching method requires and uses no expensive gas containing a fluorocarbon, but has sufficient etching rate and selectivity.
摘要翻译:通过使用辉光放电等离子体,对SiO 2,磷硅酸盐玻璃,Si,Mo,W,Cr,TiW,Si 3 N 4等进行加工的干式蚀刻方法包括引入He,Ar,N 2,O 2或 其混合气体从外部进入反应室; 并且在反应室中进行等离子体放电,使得反应气体从布置在反应室中的含有氟原子的高分子树脂材料释放出来。 干蚀刻方法需要并且不使用含有碳氟化合物的昂贵的气体,但是具有足够的蚀刻速率和选择性。
摘要:
Disclosed is a method for preventing corrosion of Al and Al alloys processed by the dry-etching method, which comprises (i) the step of sputtering Al or Al alloy in an ammonia-containing atmosphere and (ii) the step of washing the sputtered Al or Al alloy with an alkaline aqueous solution and then with water after termination of the step (i).According to this method, corrosion of Al or Al alloy by halogen element-containing substances stuck to Al or Al alloy during the dry-etching treatment can be effectively prevented.
摘要:
Method and apparatus for monitoring a dry etching process using gas plasma, wherein a ratio of a spectrum intensity which varies depending on the process of the etching process to a spectrum intensity which is independent of the process of the etching process is determined and a resulting signal intensity is monitored. The completion of the etching process can be exactly determined irrespective of variation of the etching conditions.
摘要:
A plasma etcher wherein the provision of a gas outlet directly in an etching chamber is avoided and wherein a subchamber having a sufficient capacity is connected to the etching chamber through a joint part, the gas outlet being provided in this subchamber. With the apparatus, the distribution of etching rates in plasma etching becomes uniform.
摘要:
A method for dry-etching Al and Al alloys is disclosed, which comprises producing plasma discharges with a mixed gas comprising boron trichloride and freon and/or oxygen incorporated therein and patterning Al or an Al alloy by the produced discharges. In this dry etching method, the etch rate of Al or an Al alloy can be remarkably improved over the etch rate attainable according to the conventional techniques, and the difference of the etch rate between Al or an Al alloy and other material can be remarkably increased.
摘要:
This invention relates to a fine processing of aluminum and aluminum alloy layers, and to a method for dry etching by a plasma in a gas containing hydrogen and/or a gaseous hydrogen compound and further containing a gaseous chloride. The fine processing without suffering from the side-etching is feasible even in case using an inorganic material as a mask.
摘要:
A dry-etching process comprising dry-etching treatment of semiconductor material by action of a gas and, if necessary, cleaning treatment, characterized in that at least one of the dry-etching and cleaning treatments is conducted under action of a gas composed essentially of a fluorinated ether.
摘要:
This invention relates to biological treatment of waste water using a carrier floatable on water, and more particularly to a novel process for treatment of waste water utilizing a fluidized bed which is formed by supplying waste water in a downflow operation. The process for treatment of waste water of this invention is applicable to both anaerobic and aerobic biological treatment. A good example of the former anaerobic biological treatment to which this invention is applicable is the process wherein the nitrate or nitrite nitrogen which is one of the nitrogen compounds that are at present believed to be one cause of the eutrophication in rivers, lakes, seas, etc. is treated with denitrifying bacteria in an anaerobic condition to be released in the form of nitrogen gas, and the typical of the latter aerobic treatment is the practice in the utilization of the action of the aerobic bacteria which can oxidize organic substances in sewage, industrial waste waters, etc.
摘要:
A method for preparing a conductive thermoplastic resin composition or an electric conductor includes the step of kneading (a) conductive resin master batch pellets of conductive carbon black and a thermoplastic resin in which the conductive carbon black accounts for 5 to 50% by weight relative to the total amount 100 parts by weight of the conductive carbon black and the thermoplastic resin, (b) a thermoplastic resin in a weight ratio: (a+b)/(a) ranging from 1.01 to 1.5. This method permits the production of a conductive carbon black-containing conductive resin composition and an electric conductor which show stable conductivity even within a high resistance region (having a surface resistivity ranging from 10.sup.6 to 10.sup.16 .OMEGA.), wherein the control of the conductivity is difficult.
摘要:
A polyester-polyether copolymer composition which comprises a polyester-polyether copolymer composed mainly of an aromatic dicarboxylic acid, 1,4-butanediol, and a polyalkylene glycol of average molecular weight from about 400 to 6,000, an effective amount of organotin compound, and an amide-containing phenolic antioxidant having the following general moiety: ##STR1## (where R is a secondary or tertiary alkyl group, R' is a hydrogen atom or a secondary or tertiary alkyl group, and n is from 0 to 6).