g*****g
发帖数: 390 | 1 Experiment is probably the only way to go, such as stop the lubricant
sprayer, then run for a period and check the surface wear afterwards.
Besides lubrication, material selection, surface treatment and finish are
probably equally important factors for wear, if not more.
//要知道轮齿赫兹变形是表面粗糙度好几倍呢。。
Is this Hertzian deformation elastic or plastic? I assume it is elastic so
that contact area is significantly large and contact stress is not high at
all.
Lubricant here is probably more like a coolant, ... 阅读全帖 |
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d********0
发帖数: 2 | 2 I was accpeted by dental school recently and now want to sell the items that
I used to practice for clinical exam. See link:
http://www.flickr.com/photos/53988432@N04/
1. Highspeed handpiece: 150$
2. Spray: 5$ (protect your high speed handpiece after each use)
Spray free if you take HS handpiece
3. Amalgama: 2$/
4. Kilgore teeth: 2$/ea (used in most US dental schools)
5 Carbide bur: 1$/ea
6. Diamond bur: 10$/ea
7. Frasaco teeth: 1.5$/ea
Email me if you are interested. d********[email protected]
Thanks ... 阅读全帖 |
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O********1
发帖数: 29 | 3 D. Lespiaux, F. Langlais, R. Naslain, A. Schamm, J. Sevely, J. Mater.
Sci. 30 (1995) 1500.
Correlations between gas phase supersaturation, nucleation process and
physico-chemical characteristics of silicon carbide deposited from Si-C-H-Cl
system on silica substrates
Please send it to: s*******[email protected]
thanks！ |
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x*******y
发帖数: 15 | 4 Title: High-Temperature Stability of Silicon Carbide Nanowires
Author(s): Shim HW, Kuppers JD, Huang HC
Source: JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY Volume: 8 Issue: 8
Pages: 3999-4002 Published: AUG 2008 |
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x*******2
发帖数: 5333 | 6 There are some nanomaterials, which change their volume a lot in some
conditions. I hope to coat some sort of nanofilms on their surfaces to
constraint this expansion to keep the volume constant or greatly reduce this
volume change. Maybe some kind of ceramic, such as carbide or oxide. What
is the most accurate term to describe this property? Is there any review
paper on such properties of nanofilms? |
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x*******6
发帖数: 994 | 7 《Bulletin of the Chinese Ceramic Society》 1994-06
Li Ping Wang Ynnglan Yang Jianjeng Gao Jiqiang Jin Zhihan (Xian Jinotong
University)
Study on the Boron Oxide Carbothermal Reduction Synthesis of Boron Carbide
多谢 |
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G**********3
发帖数: 161 | 8 如题，领域是ceramic，小方向是Silicon Carbide Ceramic
有相关领域的审稿人，请站内联系！
谢谢！ |
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i***a
发帖数: 4718 | 9 http://smartech.gatech.edu/handle/1853/31270
Abstract:
Graphene has recently emerged as a material likely to complement or
eventually succeed silicon in electronics. From 2001 to 2004, groundbreaking
research was pursued behind the scenes at Georgia Tech; various directions
were explored, including exfoliation techniques and CVD growth, but
epitaxial graphene on silicon carbide emerged as the most viable route. This
document provides archival information that may otherwise be difficult to
ob... 阅读全帖 |
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y****8
发帖数: 18 | 10 Peeling HOPG with Scotch tapes is not new. It's a regular practice for
people who use scanning probes. HOPG is often the sample to use when you
want to test or troubleshoot a scanning probe. To get a fresh sample without
contamination, the first step is to use Scotch tape to peel off a few
layers. I guess, this method should be well-known among experimental
physicists.
Even so, the idea of using Scotch tape to make an atomic layer sounds crazy.
I've heard a couple of people saying, in the past c... 阅读全帖 |
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e******a
发帖数: 176 | 11 For the attaching part, you can use a carbide drill bit for concrete. Drill
a hole on the wall, put in anchor, and drill a countersink hole on your post
, and fasten using 2 or 3" wood screw.
For a door, buy two or three outdoor hinges. You'll also need a latch to loc
k the door in place. |
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D**********s
发帖数: 3139 | 12 silicon carbide nickel？喷在纯铝的引擎上重量轻且耐磨？
LFA我不知道缸体是不是等离子喷涂的SiC？不过气门什么的都是钛上渗入一层氮化钛，
掺硅的铝合金丰田肯定还是觉得不够稳定。 |
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p*********e
发帖数: 32207 | 13 ☆─────────────────────────────────────☆
yeemartin (猪头) 于 (Mon Aug 17 05:10:38 2009, 美东) 提到:
看了一篇的文章
有解释为啥Shell Rotella T、Mobil Delvac这些heavy duty diesel oil的Used oil
analysis结果都很突出的原因，普通engine oil是S certification，例如SJ、SM。商
用truck engine oil是C certification， 目前是CI、CJ。C的additive package比S的
牛x很多，但有可能会不兼容乘用车上的catalytic converter。
我的G35目前就在用Shell Rotella T，摩托车下次换油也准备用这个。mobil的
synthetic motorcycle oil 1 quart 12刀，受不了。
Commercial (Diesel) Oil
The additive packages for C (commercial) certification... 阅读全帖 |
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w*******y
发帖数: 60932 | 14 Versatile and easy enough for anyone to use safely, the AccuSharp 001 Knife
Sharpener lets you quickly sharpen a wide variety of bladed tools, from
straight and serrated knives to cleavers and axes. Its unique, ergonomic
design guards your fingers while a dependable, diamond-honed tungsten
carbide blade puts a precision edge on your tools.
LINK
I've had this sharpener in my cart for a long time at $9-$10, today the
price dropped to $7.27. I know it's not as nice as some of the fancier ones
that |
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w*******y
发帖数: 60932 | 15 3headedpony.com:
http://www.3headedpony.com
is running an all day sale where all their rings are $19 each once added
to the cart.
from an email:
"Suppose you could get them for a stylish ring, wedding band, replacement
band, or as a decoy wedding band so women will think you're married (which
coincidentally makes them more attracted to you)"
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w*******y
发帖数: 60932 | 16 Just ordered more rings from 3HP with a mystery coupon: PTRBOGO. It appears
to be 50% off of 2 rings or more, but has some random discount as well that
shows up in the cart. Just add what you want and see what it comes out to.
Example:
tectonic 12 17.50
Brick Block 09 16.70
fabrice 12 18.00
militant pacifist 12 7.77
Total: 27.00 (6.75 each.)
Some sizes are not available. Your mileage may vary!
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w*******y
发帖数: 60932 | 17 Link:
http://www.amazon.com/Wusthof-2904-2-Stage-Knife-Sharpener/dp/B
Product Features
Safe and easy to use, this 2-stage knife sharpener requires nothing but a
few easy strokes to keep blades sharp
V-shaped cutting head with 2 crossed carbide blades puts a quick edge on
knives, and the ceramic side nicely finishes the edges
Comes equipped with built-in scissors sharpener; rod conforms to angle of
right- or left-handed scissors, sharpening both blades at same time
A rubberized base provides a su... 阅读全帖 |
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w*******y
发帖数: 60932 | 18 Wusthof 2-Stage Knife Sharpener $10.06 free shipping with Prime (FSSS) from
Amazon
Safe and easy to use, this 2-stage knife sharpener requires nothing but a
few easy strokes to keep blades sharp
V-shaped cutting head with 2 crossed carbide blades puts a quick edge on
knives, and the ceramic side nicely finishes the edges
Comes equipped with built-in scissors sharpener; rod conforms to angle of
right- or left-handed scissors, sharpening both blades at same time
A rubberized base provides a sure, ... 阅读全帖 |
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w*******y
发帖数: 60932 | 19 Craftsman 18780 Evolv 12 amp Corded 7-in Circular Saw:
http://www.sears.com/shc/s/p_10153_12605_00918780000P
- 25.49
Select pick up in store to save on shipping
If you buy 2 (spend over $50) use code SDEALS817 for $5 off - $46.73 Final
Product Description
Durable Craftsman 7-1/4 in. 12 Amp, circular saw provides 5500 RPMs. Ample
power for fast, sure cuts. Die-Cast aluminum upper and lower blade guards
add strength and reduce the saw's overall weight. Ergonomic D and glove grip
Bail handles pro... 阅读全帖 |
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w*******y
发帖数: 60932 | 20 Link:
http://www.cporotarytools.com/factory-reconditioned-dremel-6800
Factory Reconditioned with 5 year warranty for corded and 2 year warranty
for cordless.
Not professional grade tools but useful and popular never -the-less. Good
number of accessories included. Be forewarned about the Trio... it's kind of
like a junior router and it has it's own proprietary bits which are more
expensive than universal router bits and they don't take all Dremel bits.
$79.99 + 6.99 shipping
4-6% cashback from va... 阅读全帖 |
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w*******y
发帖数: 60932 | 21 Link:
to yapchagi for the ad scan.
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w*******y
发帖数: 60932 | 24 Lowest its been in a long time, especially the white... i was waiting for a
80 AR deal again but its been 5 months since another one of those came
around.
Link:
http://iway.org/9615011
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E**O
发帖数: 1980 | 25 按FA，其实不晚，但你要TA一下看进场时机。目前所有的分析文章都是说它的LED发光
二极管，很少有人关注它也做灯泡，灯具，Silicon Carbide Diode。后者在太阳能转
换，LED背光的LCD电视和PC、Server电源中的应用会逐步增长。 |
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A***o
发帖数: 2783 | 26
这个跟美国法律系统无关啊。。。470M是跟印度人的庭外和解数字。。。
其实你别这么想，最多把公司的钱全部赔偿，直接责任人入狱，还能怎
么样赔得更多？偶到是觉得当初印度人开价不高。。。可是对付一个有
限公司，偶不知道还能怎么样。。。总不可能让美国政府承担责任吧。。
那更没有法律根据了。。。 |
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A***o
发帖数: 2783 | 27
我朋友是无所谓。
我说的就是保险公司怎么从这个开8X年破卡迪拉克的买不起
保险的老黑要钱。。。。偶从前写过一片关于美国法律保护
什么人的贴子。。。现在不止所终。。。结论是法律保护穷
人的轻罪，富人的重罪，碰巧这两种犯罪或者危害不大，或
者发生概率教低。。。 |
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A***o
发帖数: 2783 | 28 法律本身并无倾向性，但执行的效果确实如此。。。偶当时举的例子
就是那个4RUNNER，你不能把那个追尾的老黑怎么样，大概政府还要
给他付医院的钱，可是象O.J那个案子，要是个穷人，还不早就死透。 |
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A***o
发帖数: 2783 | 29
偶还是觉得两码事情。。。跟你后面说的利益最大化博弈有关系。。。
就好象前阵DC的狙击手，照你说这恶意杀人不得比前些年那个在McD喝
咖啡烫伤了的老太太恶劣10*N倍。。。他们能赔给每个受害人多少钱？
0:1M。//shrug |
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A***o
发帖数: 2783 | 30 偶没有统计数字。。。。。可以从直觉上推出。。。。有钱人吃张
罚单什么的是不是马上就付了，穷人到是经常探讨怎么跟警察法官
argue的问题，真不在乎credit history的人肯定连理都不理。。
重罪，比方杀人，有钱人一般有许多办法，可以不用那么极端的办
法解决问题，而出了事情，也可以请好律师尽量减轻罪名，穷人的
街头斗殴就可能拔枪，一旦被抓，谁肯给他们好好辩护？
Anyway, 个人印象而已，不是什么科学理论。。。 |
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A***o
发帖数: 2783 | 31
要你那么说，该负责是印度政府啦。。。美国人没道德----又怎么样？
难道你觉得UCB会愿意因为放松标准出这种事情？印度政府批准他们建
厂，并且没有坚持要求高标准难道不用负责？偶没看事故调查报告，但
相信主要还是意外，如果不比较事故的规模，不带感情论事，这个跟哥
伦比亚出事没大区别。美国政府可能规定类似的厂在美国不能建，可它
管不着公司要在外国建厂，更无法对意外事件付很多责任。。。起诉UCB
屠杀人类罪？说不大通吧。。。
还是那句话，只能在博弈的范围内争取最大利益来解决问题。注意，偶
不是说470M多了，只是说你不能把这件事情牵扯得太远。
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