Iulian Ripoșan

Iulian Riposan, n.17 februarie 1948, com. Băcia, sat Petreni, jud. Hunedoara.

Formare: Absolvent al Liceului Decebal din Deva în anul 1965; absolvent al Institutului Politehnic din București [IPB], Facultatea de Metalurgie, în anul  1970; Titlul de Dr. ing. obținut în anul 1978 la IPB, cu teza “Cercetări privind fontele cu grafit vermicular“. Bursier Fulbright, „Ferrous Matrix Composites”, University of Alabama-Tuscaloosa, SUA, 1991-1992.

Cariera: Activitate didactică universitară, în cadrul Universității POLITEHNICA din București, Facultatea Metalurgie/Știința si Ingineria Materialelor începând cu anul 1970 până în prezent, parcurgând toate gradele didactice de la cel de asistent până la cel de profesor, obținut în anul 1993; Conducător de doctorat „Ingineria Materialelor“ din anul 1992; Director Departament [1992-2008] si Secretar Științific/Cancelar Senat UPB [2004-2020]. Profesor Emerit [din 2021], Universitatea Națională de Știința si Tehnologie POLITEHNICA București.

Publicații: 3 Monografii in Editura Tehnică, “Fonte cu grafit vermicular” (1984-prima monografie de profil pe plan mondial), “Fonte Albe rezistente la uzare” (1987) si “Fonte Bainitice” (1989-prima monografie de profil pe plan mondial, incluzând toate tipurile de fonte); Capitol “Istoria Metalurgiei”, Istoria Tehnicii Romanești, Vol. I, Editura Academiei Române, București, 2019 (Springer, 2024, Vol. 44); Capitol “Modification and Inoculation of Cast Iron”, ASM-American Society of Materials Handbook, Volume 1A: Cast Iron Science and Technology, 2017, SUA; Capitol “Fonte”, Tratat de Știința si Ing. Mater. Metalice, Vol. 3 si 4, ASTR-AGIR, 2009, 2010.

Articole: Peste 300 lucrări publicate, din care peste 150 lucrări in alte 33 de tari [Germania, Anglia, SUA, Franța, Japonia, Elveția, Spania, India, Brazilia, Australia, China, Norvegia, Olanda, Korea, Polonia, Turcia, Egipt, Canada, Portugalia, Rep. Cehă, Ungaria, Rusia, Bulgaria, Slovacia, Suedia, Mexic, Slovenia, Belgia, Croația, Serbia, Argentina, Africa de Sud, Austria]. 23 lucrări au reprezentat Romania (prin ATTR-Asociația Tehnica de Turnatorie din Romania) la World Foundry Congresses (CIATF/WFO, 1974-2024), organizate de către CIATF/WFO (World Foundry Organization, Romania fiind reprezentata prin ATTR). 36 lucrări la Congresele / Conferințele / Simpozioanele organizate de către American Foundry Society (AFS) si Ductile Iron Society (DIS), SUA/Canada/Mexic: AFS Metalcasting Congress [1985-2018], „Keith Millis” Ductile Iron Symposium [1998-2018], AFS / DIS Specialized Conferences [1998-2004]. Cast Iron European Networking Meeting [2009-2024], AFC–Asian Foundry Congress [1999, 2008], ARABCAST – Arabian Foundry Congress, Egypt [1997 – 2017], Cupola Int. Conf. [2000, 2004], etc.

Brevete invenție: 35 Brevete de Invenție (30-Indexate in ISI-WOS–Derwent Innovation Index).

Colaborări Internaționale: ELKEM, Norvegia, 1998-2010; METALKRAFT, Norvegia, 2008; CMRDI-Central Metallurgical Research & Development Institute, Egipt, 1997-2018; din 2009-Cast Iron European Team; din 2012 – ASI International, SUA.

Asociații si Societăți Profesionale: AFS-American Foundry Society înființată in 1896 (membru internațional, 2003); ASM International-The Materials Information Society; Cast Iron European Team (membru fondator, 2009); Asociația Tehnica de Turnatorie din Romania [ATTR, membru fondator in 1990, continuatoarea Comisiei de Turnatorie-CNIT, membră World Foundry Organization, Președinte 1997-2014]; Societatea Romana de Metalurgie (SRM); UNIROMSIDER-Uniunea Prod. de Otel din Romania; Societatea Inventatorilor din Romania.

Distincții: Premiul „Aurel Vlaicu” al Academiei Romane, 1985 (Contribuții Fonta cu grafit vermicular); AMERICAN FOUNDRY SOCIETY [AFS]-Award of Scientific Merit–2012 (“for advancing the knowledge of the cast iron industry through extensive research and for generously sharing his knowledge and expertise with the industry”. “This is the highest recognition of AFS and your peers can give to the individuals who have served the industry honorably and well”); THE BEST PAPER AWARD: World Foundry Congress (WFC)-The Best Paper Award 63^rd WFC, 1998 (Ungaria) si The Best Scientific Paper Award-Gold, la 74^th WFC, 2022 (Korea)]; American Foundry Society Metalcasting Congress The Best Paper Award-2003, 2004, 2019; Premiul I (1989) CNST, faza națională a concursului de creație științifică si tehnica; 10 Premii la Saloanele Naționale de Invenții; Profesor Onorific”, Universitatea „Dunărea de Jos” Galați (2012).

Lucrări științifice reprezentative:

1. I. Riposan, L. Sofroni. Fonte cu grafit vermicular. Ed. Tehnica, Bucuresti, 1984, 334 pagini. Chemical Abstracts (SUA), B224235t, 102, 1985; BCIRA Abstracts (Anglia); SCOPUS.
2. I. Riposan, T. Skaland. Modification and Inoculation of Cast Iron, ASM- Handbook, Vol. 1A: Cast Iron Science and Technology, D.M. Stefanescu, Vol. Editor, 2017, pg. 160 – 176.
3. I. Riposan, S. Stan. History of Metallurgy. In: Banabic, D (eds) History of Romanian Technology and Industry. History of Mechanism and Machine Science, Vol. 44, Springer, Cham https://doi.org/10.1007/978-3-031-39393-8_4, 2024, ISBN 978-3-031-39392-1.
4. L. Sofroni, I. Riposan, I. Chira. Some considerations on the crystallization features of cast irons with intermediary shape (Vermicular type) graphite. Proc. of the 2^nd Int. Symp. on the Metallurgy of CI, Geneva, Switzerland, 1974; Georgi Publishing Co., St. Saphorin, Switzerland, 1975, pp.179-195.
5. I. Riposan, M. Chisamera, L. Sofroni. Contributions to the Study of some Technological and Applicational Properties of Compacted Graphite Cast Iron. AFS Transactions, vol. 94, 1985, pp. 35-48.
6. M. Chisamera, I. Riposan, M. Barstow. The Importance of Sulfur to Control Graphite Nucleation in Cast Irons. AFS Inoculation Conf. 6-8.04.1998, Rosemont, IL, USA, Paper no. 3.
7. I. Riposan, M. Chisamera, L. Sofroni, S. Stan, M. Liliac. Contributions to the Development of the Nodular and Vermicular Graphite Cast Irons Technologies. 63^rd World Foundry Congress, Budapest, Hungary, 1998 (THE BEST PAPER AWARD); Kohaszat (H), No, 1999, pp.11-18, No. 2, 1999, pp. 59-65.
8. I. Riposan, M. Chisamera, S. Stan, T. Skaland. Graphite Nucleants (Microinclusions) Characterization in Ca/Sr Inoculated Grey Irons. Int. Journal of Cast Metal Research, Vol. 16, No. 1-3, pp.105-111, 2003. WOS:000186431800020, DOI: 10.1179/136404603225006756.
9. I. Riposan, M. Chisamera, S. Stan, T. Skaland. A New Approach to the Graphite Nucleation Mechanism in Grey Irons. Proc. of the AFS Cast Iron Inoculation Conf., 2005, Schaumburg, IL, USA, pp.31- 41.
10. M. Chisamera, I. Riposan, S. Stan, D. White, G. Grasmo. Graphite Nucleation Control in Grey Cast Iron. Int. J. Cast Metals Res., 2008, Vol. 21, No 1-4, pp. 39-44. WOS:000261010000009, DOI: 10.1179/136404608X361639 [The 10^th Asian Foundry Congress (AFC-10), Nagoya, Japan, 2008].
11. I. Riposan, M. Chisamera, S. Stan, D. White. Complex (Mn,X)S compounds – major sites for graphite nucleation in Grey Irons. CHINA FOUNDRY, Vol. 6(4), 2009, 352-357. WOS:000272457700011.
12. I. Riposan, M. Chisamera, S. Stan, C. Hartung, D. White. Three-Stage Model for the Nucleation of Graphite in Grey Cast Iron. Proc. of the “Carl Loper” Cast Iron Symp., 27-29, 2009, Madison, Wisconsin, USA, pp. 191-200; Materials Science and Technology, Vol. 26, No. 12, pp. 1439-1447, 2010. WOS:000284688000005, DOI: 10.1179/026708309X12495548508626.
13. I. Riposan, M. Chisamera, S. Stan, G. Grasmo, C. Hartung, D. White. Iron Quality Control during Melting in Coreless Induction Furnace. AFS Trans., Vol. 117, p. 423-434, 2009. WOS:000271639500037.
14. S. Stan, M. Chisamera, I. Riposan, M. Barstow. Applications of thermal analysis to monitor the quality of hypoeutectic cast irons during solidification in sand and metal moulds. JTAC, Vol.110 (3), 2012, pp.1185-1192, WOS:000311510500021, DOI: 10.1007/s10973-011-2128-y.
15. N. Ivan, M. Chisamera, I.Riposan. Influence of Mg content and coating type on graphite degeneration in surface layer of iron castings in resin sand – PTSA moulds. ISIJ Int. Vol. 52 (2012), 10,1848–1855, WOS:000310770200018, http://dx.doi.org/10.2355/isijinternational.52.1848.
16. M.Chisamera, I. Riposan, S. Stan, M. Barstow. Simultaneous Cooling and Contraction / Expansion Curve Analysis during DI. AFS Transactions, Vol. 120, pp. 375-388, 2012. WOS:000323529500038.
17. N. Ivan, M. Chisamera, I.Riposan, S. Stan. Control of Graphite Degeneration in the Surface Layer of Mg – treated Iron Castings in Resin Sand – P-Toluol Sulphonic Acid (PTSA) Molds. AFS Transactions, Vol. 121, pp. 379-390, 2013. WOS:000323529600041.
18. I. Riposan, M. Chisamera, V. Uta, S. Stan, R. Naro and D. Williams, The Importance of Rare Earth Contribution from Nodulizing Alloys and Their Subsequent Effect on the Inoculation of Ductile Iron, Int. Journal of Metalcasting, Vol. 8 (2), 2014, pp.65-80; WOS: 000335609500008;
19. S. Stan, I. Riposan, M. Chisamera, M. Barstow. Solidification Pattern of Si Alloyed DI. Proc. 122^nd AFS Congr., 2018, Fort Worth, TX, USA, P. 18-022, THE BEST PAPER AWARD; AFS Trans., 2018, Vol. 126.
20. I. Riposan, M. Chisamera, S. Stan, V. Uta, I.C. Stefan, M.C. Firican, R.L. Naro, D.C. Williams. Demystifying the Effects of S in Cast Irons, AFS Trans., 2016, 124, 247-266, WOS:000390070200025.
21. I. Riposan, M. Chisamera, S. Stan. The Role of Compounds in Graphite Formation in Cast Iron. SPCI–XI, 2017, Jonkoping, Sweden. Mater. Sci Forum, TTP, Switzerland, Vol. 925, pp. 3-11.
22. S. Stan, I. Riposan, M. Chisamera, I. Stan, Solidification characteristics of silicon alloyed ductile cast irons. JMEP, 2019, Vol. 28 (1), 278 – 286; WOS: 000455266500027, (73WFC, Krakow).
23. D. Anca, M. Chisamera, S. Stan, I. Riposan, Graphite degeneration in high Si, Mg-treated iron castings – sulfur and oxygen addition effects, Int. Journal of Metalcasting, 2020, Vol. 14(3), pp. 663-671. WOS:000543460800006, DOI: 10.1007/s40962-019-00385-2.
24. I. Riposan, E. Stefan, S. Stan, N. R. Pana, M. Chisamera. Effects of Inoculation on Structure Characteristics of High Silicon Ductile Cast Irons in Thin Wall Castings. Metals2020, Vol.10 (8), Art. 1091, WOS: 000567267200001, https://doi.org/10.3390/met10081091
25. I. Riposan, D. Anca, I. Stan, M. Chisamera, S. Stan. Graphite Nodularity Evaluation in High-Si Ductile Cast Irons. Materials 2022, 15(21), 7685; https://doi.org/10.3390/ma15217685
26. I. Riposan, S. Stan, D. Anca, E. Stefan, I. Stan, M. Chisamera. Structure Charact. of High-Si DI. “SCIENTIFIC BONI EVENTUS – THE BEST SCIENTIFIC PAPER AWARD – GOLD”, 74^thWorld Foundry Congress, Busan, Korea, 2022; Int. Journal of Metalcasting, Vol. 17, pp. 2389-2412, 2023.
27. Stan, M. Chisamera, R. Lascu, C. Cariga, E. Stefan, S. Stan, D. Anca, I. Riposan. High temperature oxidation of inoculated high Si/SiMo Ductile Cast Irons in air and combustion atmospheres. CHINA FOUNDRY, Vol. 21 (5), 2024, pp. 555-562, https://doi.org/10.1007/s41230-024-4063-0.