24СʱÈÈÃŰæ¿éÅÅÐаñ    

²é¿´: 437  |  »Ø¸´: 2

attdey

ľ³æ (ÖøÃûдÊÖ)

[½»Á÷] ¡¾ÇóÖú¡¿ÇóÖú¾§Ìå½á¹¹ ÒÑÓÐ1È˲ÎÓë

ÄÄλͯЬ֪µÀÁù·½ B4C¾§ÌåµÄ¿Õ¼äȺºÍÔ­×Ó×ø±ê°¡  »­¾§Ìå½á¹¹Í¼Óà Ô½ÏêϸԽºÃ  £¬ÓÐ10µÄ½ð±ÒµÄÐÁ¿à·Ñ
»Ø¸´´ËÂ¥
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

zbdfwq5777

ľ³æÖ®Íõ (ÎÄѧ̩¶·)

ÖÁ×ðɽÑò

ÎÄÏ׽ܳö¹±Ï×

B4C

¡ï ¡ï ¡ï
µÛ·ò(½ð±Ò+3):¸Ðл»ØÌû½»Á÷~ 2010-04-29 10:24
attdey(½ð±Ò+10):ллÁË ÄܸæËßÎÒÄãÊÇÔõô²éµ½µÄÂ𠣿 2010-04-29 20:05
*data for   ICSD #29093
Coll Code   29093
Rec  Date   1980/01/01
Mod  Date   2007/04/01
Chem Name   Boron(I) Carbide
Structured  B4 C
Sum         C1 B4
ANX         A4X
D(calc)     2.5
Title       The crystal structure of boron carbide
Author(s)   Clark, H.K.;Hoard, J.L.
Reference   Journal of the American Chemical Society
            (1943), 65, 2115-2119
            Zhurnal Fizicheskoi Khimii
            (1943), 17, 326-335
Unit Cell   5.61 5.61 12.14 90. 90. 120.
Vol         330.88
Z           9
Space Group R -3 m H
SG Number   166
Cryst Sys   trigonal/rhombohedral
Pearson     hR15
Wyckoff     h2 c b
Red Cell    RH 5.183 5.183 5.183 65.525 65.525 65.525 110.294
Trans Red   0.333 -0.333 -0.333 / -0.667 -0.333 -0.333 / 0.333 0.667 -0.333
Comments    Cell from 2nd reference: 5.63, 12.14, z(B1) was given as
            .36, cf, 23923
            AE: B1: B4 C54; B2: B5 C; Ca: B6 C2; C2: B6 C
            The structure has been assigned a PDF number (calculated
            powder diffraction data): 01-075-0424
            The structure has been assigned a PDF number (experimental
            powder diffraction data): 35-798
            Structure type prototype : B4C
            Structure type : B4C
            X-ray diffraction from single crystal
            No R value given in the paper.
            At least one temperature factor missing in the paper.
Atom  #   OX   SITE      x           y           z           SOF      H
B    1  +1    18 h  0.1667      -.1667      0.26           1.         0   
B    2  +1    18 h  0.106       -.106       0.113          1.         0   
C    1  -4    6 c   0           0           0.385          1.         0   
C    2  -4    3 b   0           0           0.5            1.         0   
*end for    ICSD #29093
2Â¥2010-04-29 10:19:12
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

zbdfwq5777

ľ³æÖ®Íõ (ÎÄѧ̩¶·)

ÖÁ×ðɽÑò

ÎÄÏ׽ܳö¹±Ï×

¡ï ¡ï ¡ï
µÛ·ò(½ð±Ò+3):¸Ðл»ØÌû½»Á÷~ 2010-04-29 10:24
3Â¥2010-04-29 10:19:52
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ attdey µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[»ù½ðÉêÇë] ͶƱ:  ÓжàÉÙÈËÊǽñÌì²éϵͳ֪µÀ½á¹ûµÄ£¿ +16 °®¿´ÊéµÄ¿ÉÀÖ 2026-08-26 18/900 2026-08-28 17:09 by winsaint
[»ù½ðÉêÇë] Ϊʲô×ÊÖúÊý¸÷´ó¸ßУ¶¼´´Ð¸ߣ¬×Ô¼ºÉêÇëÔõô¾ÍÕâôÄÑ +11 Kittylucky 2026-08-27 12/600 2026-08-28 16:26 by lyxiaomc
[»ù½ðÉêÇë] ÓÐûÓÐÈÔûÊÕµ½ÐÅÏ¢µÄ +3 µÂÉÐÖÐÐÐ 2026-08-27 3/150 2026-08-28 15:24 by rongshuxia
[½Ìʦ֮¼Ò] µ¼Ê¦Í²ۣºÎÒÔõô̯ÉÏÁËÕâô¸ö¼«Æ·Ñо¿Éú£¡ +8 ËÕ¶«ÆÂ¶þÊÀ 2026-08-23 8/400 2026-08-28 14:41 by lkforward
[»ù½ðÉêÇë] »ù½ð²»ÖУ¬¹²Ãã +11 eulota 2026-08-26 11/550 2026-08-28 14:22 by »ðÐdz¬ÈËxi
[»ù½ðÉêÇë] Â鷳ר¼ÒÃÇ¿´¿´ÆÀίÃǵÄÒâ¼û£¨F¿ÚÃæÉÏ£© +4 gdd2018 2026-08-28 9/450 2026-08-28 14:22 by jklily
[»ù½ðÉêÇë] »ù½ðϵͳʲôÄÚÈÝҲûÓÐ 30+4 winsaint 2026-08-27 9/450 2026-08-28 11:06 by maolC
[»ù½ðÉêÇë] ÄÄλ¸ßÈËÖÐÁË£¬°Ñ²éѯµ½µÄ½ØÍ¼Ìù³öÀ´ÈÃÎÒ¿´¿´£¬ÈÃÎÒ³¤³¤¼ûʶ +5 yuleib84 2026-08-26 6/300 2026-08-28 00:02 by yudaoqian88
[»ù½ðÉêÇë] ÃæÉϺÏ×÷µ¥Î»¸ÇÕ +5 ssyjh 2026-08-27 5/250 2026-08-27 20:50 by gdfollow
[»ù½ðÉêÇë] ¿´°åÉÏÕâô¶àÖеģ¬ÓеãÏñ50ÈËȺÀï49¸öÈ˶¼ÊÇÆ­×ÓµÄÄÇÖָоõ¡­¡­ +5 a089 2026-08-26 6/300 2026-08-27 14:05 by jonewore
[»ù½ðÉêÇë] Ôõô¿´Çà»ùÖÐÁËûÓа¡ +5 Ò¶¾Å΢ 2026-08-26 5/250 2026-08-27 10:35 by l_zh2008
[»ù½ðÉêÇë] Ϊʲô ¹ú¼Ê(µØÇø)ºÏ×÷Óë½»Á÷ÏîÄ¿ ûÓзŰñ£¿ 10+3 majunge000 2026-08-26 11/550 2026-08-27 08:42 by ±±¾©À³Òð±à¼­
[»ù½ðÉêÇë] 2026ÄêµÄ¹ú¼ÒÉç¿Æ»ù½ðÏîĿͨѶÆÀÉóµÄйæÔòÓëж¯Ïò¡¢ÐÂÌôÕ½ +7 process2012 2026-08-23 10/500 2026-08-26 19:23 by hmhminy
[»ù½ðÉêÇë] 2026Äê8ÔÂ25ÈÕ¹ú×ÔÈ»·Å°ñǰͻȻÊÕµ½ÁÐÈëÆÀÉóר¼ÒÓʼþ£¬ÓйØÏµÂ𣿠+25 ľˮ˼¶¹ 2026-08-25 28/1400 2026-08-26 14:53 by draco1987
[»ù½ðÉêÇë] ¹úºÏÀïÃæÄÜ¿´µ½ÁË +7 Ò»»³Ü°Çï 2026-08-26 7/350 2026-08-26 11:23 by zhaosm1982
[»ù½ðÉêÇë] ¹ú¼ÊºÏ×÷¿É²éÁË£¬ÖÐÁËÃæÉÏ (EPI+1)(½ð±Ò+50) +18 Ldrop2023 2026-08-26 18/900 2026-08-26 11:15 by cmrandy
[»ù½ðÉêÇë] ÏîÄ¿ÐÅÏ¢ºÍ¾­·ÑÐÅÏ¢ÔÚϵͳÀï¶¼¿ÉÒÔ¿´µ½ÁË +6 wittyboy 2026-08-26 14/700 2026-08-26 10:55 by wittyboy
[Ö°³¡ÈËÉú] ѧÉúײ¼û¸¨µ¼Ô±ËÍÍâÂô£¬µÚ¶þÌìÈ«°à¶¼³ÁĬÁË +3 ¾¨ÓãÈÚ½ð_Õã½­_É 2026-08-22 3/150 2026-08-26 09:01 by zzuzxg
[»ù½ðÉêÇë] ¹úºÏÏÖÔڲ鲻µ½ÁËÂ𣿠+10 chengyan1220 2026-08-24 20/1000 2026-08-26 08:57 by peasantsprig
[»ù½ðÉêÇë] ûÓÐÈκÎÏûÏ¢-ÊDz»ÊǾÍÁ¹ÁË +9 ͼÀ²Í¼À² 2026-08-24 10/500 2026-08-25 11:59 by ÄϺ£Ð¡¸ç
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û