| ²é¿´: 5224 | »Ø¸´: 11 | ||||||
´óëë³æÄ¾³æ (СÓÐÃûÆø)
|
[ÇóÖú]
ÈýÑõ»¯¶þÌú¦Á¡¢¦Â¡¢¦Ã¡¢¦ÒÕâ4ÖÖÐÎʽ£¬Ã¿Ò»ÖÖ¶¼ÓÐÊ²Ã´ÌØÐÔ£¬Ê²Ã´ÐÔ×´
|
|
ÈýÑõ»¯¶þÌú¦Á¡¢¦Â¡¢¦Ã¡¢¦ÒÕâ4ÖÖÐÎʽ£¬¶¼ÄĸöÓдÅÐÔ£¬ÄĸöûÓдÅÐÔ£¬ËûÃÇÖ®¼äÈçºÎת±äµÈÐÅÏ¢£¬Ô½ÏêϸԽºÃ£¬ °ÝÇó¸÷λ´óÉñ£¡ |
» ÊÕ¼±¾ÌûµÄÌÔÌûר¼ÍƼö
ËÄÑõ»¯ÈýÌúÄÉÃ׿ÅÁ£ÖƱ¸¡¢ÐÞÊμ°°ü¸² | °ü¸²ÐÍÄÉÃ×´ÅÐÔ²ÄÁÏ | ÂÛÎÄд×÷ |
» ²ÂÄãϲ»¶
»¯¹¤Ñ§Ôº£¨Ñ§ÔºÕýʽµ÷¼ÁȺ+ÁªÏµ·½Ê½£©
ÒѾÓÐ0È˻ظ´
»¯¹¤Ñ§Ôº£¨Ñ§Ôº¹Ù·½Èº£©-ԺʿÍŶÓÕÐÉú-ѧÉú×ÔÓɶȸß-ÅàÑøÄ£Ê½³ÉÊì¸ßЧ
ÒѾÓÐ0È˻ظ´
ÎÞ»ú»¯Ñ§ÂÛÎÄÈóÉ«/·ÒëÔõôÊÕ·Ñ?
ÒѾÓÐ51È˻ظ´
ºÚÁú½´óѧ·ÖÎö»¯Ñ§Õе÷¼Á
ÒѾÓÐ0È˻ظ´
Î人¸ßУ¹ú¼Ò¼¶È˲ÅÍŶÓÕÐÊÕ²ÄÁÏ£¬»¯Ñ§£¬·ÄÖ¯µÈרҵ˶ʿµ÷¼ÁÉú
ÒѾÓÐ26È˻ظ´
·Ä´ó»¯¹¤Ñ§Ôº£¨¹Ù·½Èº£©-ԺʿÍŶÓÕÐÉú-ѧÉú×ÔÓɶȸ߷¢Õ¹ºÃ-ÅàÑøÄ£Ê½³ÉÊì
ÒѾÓÐ0È˻ظ´
ÎÂÖÝ´óѧ»¯²ÄѧԺÍõ¾ê¿ÎÌâ×éÕÐÉú
ÒѾÓÐ5È˻ظ´
ѧԺ¹Ù·½Èº-ԺʿÍŶÓÕÐÉú-ѧÉú×ÔÓɶȸß-ÅàÑøÄ£Ê½³ÉÊìÒÑÓÐ10ÓàÃûѧÉú¸°985º£ÍâÉîÔì
ÒѾÓÐ0È˻ظ´
Î人·ÄÖ¯´óѧ»¯¹¤Ñ§Ôº¹Ù·½Èº-ԺʿÍŶÓÕÐÉú-ѧÉú×ÔÓɶȸß-10ÓàÃûѧÉú¸°985º£ÍâÉîÔì
ÒѾÓÐ0È˻ظ´
Äϲýº½¿Õ´óѧ½¯»ª÷ë½ÌÊÚ¿ÎÌâ×éÕÐÊÕ»¯Ñ§¡¢»·¾³¡¢Ì¼´ï·å̼Öкͼ°Ïà¹Ø×¨ÒµË¶Ê¿ÐÅÏ¢
ÒѾÓÐ0È˻ظ´
ºþ±±Ê¦·¶´óѧ¸´ÊÔµ÷¼Á
ÒѾÓÐ0È˻ظ´
» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:
ÈýÑõ»¯¶þÌú¦Á¡¢¦Â¡¢¦Ã¡¢¦ÒÕâ4ÖÖÐÎʽ£¬Ã¿Ò»ÖÖµÄXRD¿¨Æ¬ºÅÂë
ÒѾÓÐ7È˻ظ´

¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
|
±¾ÌûÄÚÈݱ»ÆÁ±Î |
2Â¥2013-07-15 09:09:49
gxytju2008
ר¼Ò¹ËÎÊ (ÎÄ̳¾«Ó¢)
-

ר¼Ò¾Ñé: +1654 - MN-EPI: 2
- Ó¦Öú: 4105 (¸±½ÌÊÚ)
- ¹ó±ö: 0.053
- ½ð±Ò: 47554.2
- É¢½ð: 4089
- ºì»¨: 503
- Ìû×Ó: 14997
- ÔÚÏß: 7315.6Сʱ
- ³æºÅ: 1111232
- ×¢²á: 2010-09-29
- ÐÔ±ð: GG
- רҵ: ²ÄÁÏÎïÀí»¯Ñ§
- ¹ÜϽ: ΢Ã׺ÍÄÉÃ×
3Â¥2013-07-15 10:08:21
ÄäÃû
Óû§×¢Ïú (Ö°Òµ×÷¼Ò)
- MN-EPI: 3
- Ó¦Öú: 549 (²©Ê¿)
- ¹ó±ö: 0.23
- ½ð±Ò: 2859.9
- É¢½ð: 2337
- ºì»¨: 97
- ɳ·¢: 1
- Ìû×Ó: 3355
- ÔÚÏß: 1328.3Сʱ
- ³æºÅ: 0
- ×¢²á: 2011-07-08
- ÐÔ±ð: GG
- רҵ: Äý¾Û̬ÎïÐÔ II £ºµç×ӽṹ
- ¹ÜϽ: ²ÄÁÏÇø
4Â¥2013-07-15 11:13:58
´óëë³æ
ľ³æ (СÓÐÃûÆø)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 3763.5
- É¢½ð: 111
- Ìû×Ó: 185
- ÔÚÏß: 31.4Сʱ
- ³æºÅ: 790296
- ×¢²á: 2009-06-09
- ÐÔ±ð: GG
- רҵ: Óлú·Ö×Ó¹¦ÄܲÄÁÏ»¯Ñ§

5Â¥2013-07-16 09:29:17
´óëë³æ
ľ³æ (СÓÐÃûÆø)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 3763.5
- É¢½ð: 111
- Ìû×Ó: 185
- ÔÚÏß: 31.4Сʱ
- ³æºÅ: 790296
- ×¢²á: 2009-06-09
- ÐÔ±ð: GG
- רҵ: Óлú·Ö×Ó¹¦ÄܲÄÁÏ»¯Ñ§

6Â¥2013-07-16 09:30:05
gxytju2008
ר¼Ò¹ËÎÊ (ÎÄ̳¾«Ó¢)
-

ר¼Ò¾Ñé: +1654 - MN-EPI: 2
- Ó¦Öú: 4105 (¸±½ÌÊÚ)
- ¹ó±ö: 0.053
- ½ð±Ò: 47554.2
- É¢½ð: 4089
- ºì»¨: 503
- Ìû×Ó: 14997
- ÔÚÏß: 7315.6Сʱ
- ³æºÅ: 1111232
- ×¢²á: 2010-09-29
- ÐÔ±ð: GG
- רҵ: ²ÄÁÏÎïÀí»¯Ñ§
- ¹ÜϽ: ΢Ã׺ÍÄÉÃ×
7Â¥2013-07-16 11:14:03
×ÏÓ§º
Ìú¸Ëľ³æ (ÖªÃû×÷¼Ò)
- Ó¦Öú: 108 (¸ßÖÐÉú)
- ½ð±Ò: 9745.2
- ºì»¨: 16
- Ìû×Ó: 8410
- ÔÚÏß: 261.2Сʱ
- ³æºÅ: 1987773
- ×¢²á: 2012-09-09
- ÐÔ±ð: MM
- רҵ: ×ÊÔ´ÀûÓÿÆÑ§¼°ÆäËû
8Â¥2013-07-16 11:33:00
ljr_liliyuan
ľ³æ (ÕýʽдÊÖ)
- Ó¦Öú: 6 (Ó×¶ùÔ°)
- ½ð±Ò: 1682.6
- É¢½ð: 39
- ºì»¨: 6
- Ìû×Ó: 374
- ÔÚÏß: 368.5Сʱ
- ³æºÅ: 1019625
- ×¢²á: 2010-05-16
- רҵ: »¯Ñ§·´Ó¦¹¤³Ì
¡¾´ð°¸¡¿Ó¦Öú»ØÌû
¡ï ¡ï ¡ï ¡ï ¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
´óëë³æ: ½ð±Ò+5, ¡ï¡ï¡ïºÜÓаïÖú, ·Ç³£¸Ðл ÒªÊÇÔÚÏêϸµã¾ÍºÃÁË 2013-07-17 09:22:59
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
´óëë³æ: ½ð±Ò+5, ¡ï¡ï¡ïºÜÓаïÖú, ·Ç³£¸Ðл ÒªÊÇÔÚÏêϸµã¾ÍºÃÁË 2013-07-17 09:22:59
|
ÕâÊÇÎÒÒÔǰ²éµ½µÄ×ÊÁÏ£¬¿ÉÒԲο¼Ò»Ï Fe2O3µÄ¼¸ÖÖÏà̬£º ferric oxide has Different forms: Alpha phase,Beta phase,Gamma phase,Epsilon phase, and amorphous phase. Alpha phase¦Á-Fe2O3 has the rhombohedral, corundum (¦Á-Al2O3) structure and is the most common form. It occurs naturally as the mineral hematite which is mined as the main ore of iron. It is antiferromagnetic£¨ ·´Ìú´ÅÐԵģ© below ~260 K (Morin transition temperature), and weak ferromagnetic between 260 K and 950 K (Neel temperature).[1] It is easy to prepare using both thermal decomposition and precipitation in the liquid phase. Its magnetic properties are dependent on many factors, e.g. pressure, particle size, and magnetic field intensity. Beta phaseCubic face centered, metastable, at temperatures above 500 ¡ãC converts to alpha phase. It can be prepared by reduction of hematite by carbon, pyrolysis of iron(III) chloride solution, or thermal decomposition of iron(III) sulfate. Gamma phaseCubic, metastable, converts to the alpha phase at high temperatures. Occurs naturally as the mineral maghemite. Ferrimagnetic. Ultrafine particles smaller than 10 nanometers are superparamagnetic. Can be prepared by thermal dehydratation of gamma iron(III) oxide-hydroxide, careful oxidation of iron(II,III) oxide. The ultrafine particles can be prepared by thermal decomposition of iron(III) oxalate. Epsilon phaseRhombic, shows properties intermediate between alpha and gamma. So far has not been prepared in pure form; it is always mixed with the alpha phase or gamma phases. Material with a high proportion of epsilon phase can be prepared by thermal transformation of the gamma phase. The epsilon phase is metastable, transforming to the alpha phase at between 500 and 750 ¡ãC. Can also be prepared by oxidation of iron in an electric arc or by sol-gel precipitation from iron(III) nitrate. |

9Â¥2013-07-17 08:34:37
´óëë³æ
ľ³æ (СÓÐÃûÆø)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 3763.5
- É¢½ð: 111
- Ìû×Ó: 185
- ÔÚÏß: 31.4Сʱ
- ³æºÅ: 790296
- ×¢²á: 2009-06-09
- ÐÔ±ð: GG
- רҵ: Óлú·Ö×Ó¹¦ÄܲÄÁÏ»¯Ñ§

10Â¥2013-07-17 09:24:01














»Ø¸´´ËÂ¥

