fatfatlazy wrote:
謝謝大大....我安...(恕刪)
壓力感應正解…不然你畫不出粗細線條的
Hardness Substance or mineral
0.2–0.3 caesium, rubidium
0.5–0.6 lithium 鋰. , sodium鈉, potassium 鉀
1 talc
1.5 gallium, strontium, indium, tin, barium, thallium, lead 鉛, graphite 石墨
2 hexagonal boron nitride,[10] calcium, selenium, cadmium, sulfur, tellurium, bismuth
2.5 to 3 magnesium, gold, silver, aluminium, zinc, lanthanum, cerium, Jet_(lignite) (lignite)
3 calcite, copper 銅, arsenic砷; 砒霜, antimony銻, thorium, dentin
4 fluorite, iron 鐵, nickel鎳
4 to 4.5 platinum 白金, 鉑, steel鋼
5 apatite, cobalt, zirconium, palladium, tooth enamel, obsidian (volcanic glass)
5.5 beryllium, molybdenum, hafnium
6 orthoclase, titanium, manganese, germanium, niobium, rhodium, uranium
6 to 7 glass, fused quartz, iron pyrite, silicon, ruthenium, iridium, tantalum, opal
7 quartz, vanadium, osmium, rhenium
7.5 to 8 hardened steel (表面硬化鋼), tungsten(鎢), emerald(祖母綠), spinel
8 topaz(黃玉), cubic zirconia (立方氧化鋯晶體(人造寶石))
8.5 chrysoberyl, chromium(鉻), silicon nitride (氮化矽)
9-9.5 corundum (剛玉), silicon carbide (carborundum) (碳化矽), tungsten carbide, titanium carbide, stishovite
9.5–10 rhenium diboride(鎢錸合金), tantalum carbide(碳化鉭), titanium diboride (二硼化鈦 ), boron nitride, boron [11][12][13]
某些硼化物是所有已知物質中最硬、最耐熱的物質,如碳化硼、硼化鋁、氮化硼(電子結構類似金剛石),因而用作磨料和加強劑,特別是應用在耐高溫方面
10 diamond
>10 nanocrystalline diamond (hyperdiamond, ultrahard fullerite)
http://www.mobile01.com/topicdetail.php?f=568&t=2354322&p=1
請服用!大家說的好:有貼有保佑^^"
內文搜尋
從 APP 打開
X