Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Nattaya Tosangthum"'
Autor:
Ruangdaj Tongsri, Nattaya Tosangthum
Publikováno v:
Songklanakarin Journal of Science and Technology (SJST), Vol 33, Iss 2, Pp 209-214 (2011)
Solid state transformation of supersaturated solid solution to anomalous Ni-Sn eutectic has been studied. The metastableNi-Sn solid solution was prepared via mechanical alloying of a mixed Ni+Sn powder containing 32.5 wt-% Sn powder.The milling condi
Externí odkaz:
https://doaj.org/article/67858e2013c74036920a3eb531458114
Autor:
Ornmanee Coovattanachai, Nattaya Tosangthum, Monnapas Morakotjinda, Thanyaporn Yotkaew, Rungtip Krataitong, Bhanu Vetayanugul, Ruangdaj Tongsri
Publikováno v:
Songklanakarin Journal of Science and Technology (SJST), Vol 32, Iss 2, Pp 163-167 (2010)
Stainless steel powders (303L, 304L, 310L and 316L) were formed into tensile test bars using the “press and sinter”process. Most processing parameters, except heating rate, were kept constant. During the heating of the experimental specimensfrom
Externí odkaz:
https://doaj.org/article/c686da8e69de4b1f9e37d37695d3da4b
Autor:
Nattaya Tosangthum, Ornmanee Coovattanachai, Monapas Morakotjinda, Thanyaporn Yotkaew, Anan Daraphan, Rungtip Krataitong, Bhanu Vetayanugul, Raungdej Tongsri
Publikováno v:
Songklanakarin Journal of Science and Technology (SJST), Vol 32, Iss 1, Pp 91-95 (2010)
It was found that the addition of a liquid forming powder (up to 6 wt.% of a gas-atomized tin powder) to 316L powdercould activate the sintering process. Sintering activation could be observed by an increase of the sintered density and selected mecha
Externí odkaz:
https://doaj.org/article/2f9de8b36c194676853da13f3e0ce95b
Autor:
Thanyaporn Yodkaew, Monnapas Morakotjinda, Nattaya Tosangthum, Ornmanee Coovattachai, Rungtip Krataitong, Pisan Siriphol, Bhanu Vetayanugul, Ruangdaj Tongsri
Publikováno v:
Songklanakarin Journal of Science and Technology (SJST), Vol 31, Iss 5, Pp 555-559 (2009)
The presence of non-reactive hard particles (Al2O3) causes some effects on P/M processing of sintered Fe materials.With constant compacting pressure and sintering conditions, particle size and quantity of Al2O3 particles caused reduction of green and
Externí odkaz:
https://doaj.org/article/8f6adcbf839542a79171ded171dcbd7b
Autor:
Wananurat Srijampan, Amporn Wiengmoon, Arisara Wanalerkngam, Sarum Boonmee, Thanyaporn Yotkaew, Nattaya Tosangthum, Ruangdaj Tongsri
Publikováno v:
ISIJ International. 62:2366-2373
Autor:
Rungtip Krataitong, Ruangdaj Tongsri, Wantana Koetniyom, Pongsak Wila, Prapas Kunnam, Nattaya Tosangthum, Monnapas Morakotjinda
Publikováno v:
Key Engineering Materials. 798:9-16
Sintered steels, with and without boron addition, were prepared from powder compacts of pre-alloyed Fe-1.5Mo powder mixed with varied amounts of graphite (0, 0.1, 0.2, 0.3, and 0.4 wt.%) and hexagonal boron nitride (0 and 0.5 wt.%). Sintering was per
Autor:
Ruangdaj Tongsri, Monnapas Morakotjinda, Sithipong Mahathanabodee, Apichit Luechaisirikul, Thanyaporn Yotkaew, Patiparn Ninpetch, Nattaya Tosangthum, Roongthip Krataitong
Publikováno v:
Materials Today: Proceedings. 5:9409-9416
In this work, a pre-alloyed powder of Fe-3% Cr-0.5% Mo was admixed with boron nitride (BN) and graphite powder (0 to 0.4%). The tensile test specimens with the green density about 6.5 g/cm 3 were compacted. The specimens were sintered in vacuum furna
Autor:
Ruangdaj Tongsri, Wadsana Boontetim, Rungtip Krataitong, Pongsak Wila, Nattaya Tosangthum, Thanyaporn Yodkaew, Bhanu Vetayanugul, Monnapas Morakotjinda
Publikováno v:
Materials Today: Proceedings. 5:9351-9358
Nickel is one of the alloying elements promoting the formation of acicular ferrite at the expense of proeutectoid ferrite. The Ni addition reduces the steady-state nucleation rates of allotriomorphic ferrite in Fe-C-Ni alloys. Due to such reasons, Ni
Autor:
Sarum Boonmee, Nattaya Tosangthum, Monnapas Morakotjinda, Thapanee Srichumpong, Ruangdaj Tongsri, Arisara Wanalerkngam
Publikováno v:
IOP Conference Series: Materials Science and Engineering. 1137:012033
Sintered Fe-1.50Mo-xC alloys were produced by the sintering of powder compacts made from mixtures of pre-alloyed Fe-1.5Mo powder and varied carbon amounts (0.30-1.20 wt.% with 0.15 increment) followed by slow and fast cooling rates. The slowly cooled
Autor:
Bhanu Vetayanugul, E. Chusong, Ruangdaj Tongsri, P. Kansuwan, Pongsak Wila, R. Khosakul, Nattaya Tosangthum, Naoto Ohtake
Publikováno v:
IOP Conference Series: Materials Science and Engineering. 1137:012036
Sintered 316L/h-BN composites show high potential as self-lubricating materials, which can be applied as moving parts where lube oils and greases are not applicable and inaccessible for maintenance. The past production of such composites by sintering