找回密碼
 To register

QQ登錄

只需一步,快速開(kāi)始

掃一掃,訪問(wèn)微社區(qū)

打印 上一主題 下一主題

Titlebook: Materials and Processes of Electron Devices; Werkstoffe und Verfa Max Knoll Book 1959 Springer-Verlag OHG., Berlin G?ttingen/Heidelberg 195

[復(fù)制鏈接]
樓主: 不幸的你
41#
發(fā)表于 2025-3-28 18:05:30 | 只看該作者
42#
發(fā)表于 2025-3-28 20:21:57 | 只看該作者
Surface Treatment of Metallic Vacuum Tube Elements,moved by etching either with acid or alkalies according to the type of material to be cleaned. Grease is removed by use of suitable solvents. The choice of type of cleaning depends considerably upon the degree and nature of impurities, the chemical properties of the piece to be cleaned and the subsequent operational demands on it.
43#
發(fā)表于 2025-3-28 23:45:54 | 只看該作者
44#
發(fā)表于 2025-3-29 06:22:07 | 只看該作者
General Structure and Properties of Materials (Including Metallographic Methods), evolved throughout this process increases with the outgassing temperature. Generally no further gas should be evolved from the parts contained in the tube structure provided that the temperature attained in the exhaust process is greater than that attained throughout the operational life of the tube.
45#
發(fā)表于 2025-3-29 10:38:10 | 只看該作者
Alloys of Base Metals,c. 14.5). For vacuum technique the following are of chief importance: Fe alloys with .; . alloys with ., and .; and . alloys with ., and .. Concerning alloys of base metals with high melting metals, see sec. 3.6 and sec. 5.6.
46#
發(fā)表于 2025-3-29 13:38:06 | 只看該作者
Working and Pre-Outgassing of Metallic Vacuum Tube Parts,eases and oils as much as possible, particularly during rolling and deep drawing. The material must be washed before each necessary intermediate annealing and such annealing should take place in a hydrogen atmosphere or in vacuum.
47#
發(fā)表于 2025-3-29 18:32:06 | 只看該作者
48#
發(fā)表于 2025-3-29 20:36:09 | 只看該作者
49#
發(fā)表于 2025-3-30 02:32:21 | 只看該作者
50#
發(fā)表于 2025-3-30 05:54:23 | 只看該作者
 關(guān)于派博傳思  派博傳思旗下網(wǎng)站  友情鏈接
派博傳思介紹 公司地理位置 論文服務(wù)流程 影響因子官網(wǎng) 吾愛(ài)論文網(wǎng) 大講堂 北京大學(xué) Oxford Uni. Harvard Uni.
發(fā)展歷史沿革 期刊點(diǎn)評(píng) 投稿經(jīng)驗(yàn)總結(jié) SCIENCEGARD IMPACTFACTOR 派博系數(shù) 清華大學(xué) Yale Uni. Stanford Uni.
QQ|Archiver|手機(jī)版|小黑屋| 派博傳思國(guó)際 ( 京公網(wǎng)安備110108008328) GMT+8, 2025-10-13 21:32
Copyright © 2001-2015 派博傳思   京公網(wǎng)安備110108008328 版權(quán)所有 All rights reserved
快速回復(fù) 返回頂部 返回列表
普兰店市| 盘山县| 贵南县| 阜平县| 卓资县| 清新县| 枣强县| 峨眉山市| 荣昌县| 樟树市| 黑水县| 兴化市| 辽阳县| 郁南县| 同德县| 黄大仙区| 惠州市| 鄯善县| 河源市| 富蕴县| 靖西县| 田阳县| 民权县| 仁化县| 深圳市| 宜丰县| 集贤县| 涟水县| 红河县| 阳高县| 乐业县| 阿拉善右旗| 丰都县| 通州市| 如皋市| 莎车县| 霍城县| 镇安县| 拉孜县| 岳池县| 平江县|