艺术
美容与健康
工艺
文化与历史
娱乐
环境
食品与饮料
逆向工程
科学
体育
技术
可穿戴设备
Metal Oxide Varistor: Zinc Oxide with Bismuth and Barium Oxides, 1350 °C (Masuyama 1972)
Masuyama, Matsuoka and Nishi found that adding a second oxide to zinc oxide and bismuth oxide changes the varistor a great deal. This is their Example 2 with barium oxide: 99.0 % zinc oxide, 0.5 % bismuth oxide and 0.5 % barium oxide by moles, sintered at 1350 °C. The disc measured a C-value of 76 at 1 mA and a nonlinearity exponent n of 12.7.
Source: T. Masuyama, M. Matsuoka and T. Nishi (Matsushita), US 3,663,458 (1972), Example 2. Unknown: how the aluminium is sprayed on and what the silver paint is. The 10 g batch is our arithmetic. Picture: the patent's drawing.
高级
1 day
说明
1
1
Weigh 99.0 : 0.5 : 0.5 and wet-mill 5 hours
Weigh 99.0 : 0.5 : 0.5 and wet-mill 5 hours
Mix zinc oxide, bismuth oxide and barium oxide 99.0 : 0.5 : 0.5 by moles. Ours, for 10 g: 9.63 g zinc oxide, 0.278 g bismuth oxide, 0.092 g barium oxide (our arithmetic). Mill wet for 5 hours, then dry. Unknown: the milling liquid.
此步骤所需材料：
氧化锌粉末9.63 克
氧化铋0.278 克
氧化钡0.092 克所需工具：
等臂天平
铁球磨机
干燥炉2
2
Press discs 13 mm by 2.5 mm
Press discs 13 mm by 2.5 mm
Press the powder in a mould into discs 13 mm across and 2.5 mm thick at 340 kg/cm², as in Example 1.
所需工具：
液压机
圆片压模
游标卡尺3
3
Sinter 1 hour at 1350 °C and furnace-cool
Sinter 1 hour at 1350 °C and furnace-cool
Sinter the discs in air at 1350 °C for 1 hour, then let them cool in the furnace to room temperature (about 15-30 °C).
所需工具：
马弗炉4
4
Lap to 10 mm by 1.5 mm
Lap to 10 mm by 1.5 mm
Lap both faces with 600-mesh silicon carbide. The finished disc is 10 mm across and 1.5 mm thick.
所需工具：
碳化硅磨料游标卡尺5
5
Spray aluminium electrodes and attach leads
Spray aluminium electrodes and attach leads
Spray a metallised film of aluminium on both faces. Attach a lead wire to each with conductive silver paint. Unknown: the spraying method and the paint.
此步骤所需材料：
铝锭1 as required
银导电漆1 as required
铜线2 个所需工具：
未知的金属喷涂方法游标卡尺材料
6- 9.63 克占位符
- 0.278 克占位符
- 0.092 克占位符
- 1 as required占位符
- 1 as required占位符
- 2 个占位符
相关蓝图
这些蓝图共享知识——技术、材料或原理
CC0 公共领域
此蓝图以 CC0 协议发布。你可以自由复制、修改、分发和使用此作品，无需征得许可。
通过购买蓝图中的产品支持创客，他们将获得 创客佣金 （由供应商设定），或创建此蓝图的新版本并将其作为连接包含在你自己的蓝图中以分享收入。